Analysis of Pitmen's old bonds of 1761 at Blackwell, Charlaw, Gateshead Fell, Pontop Pike Collieries and the Delight Pit in Hutton Seam, by G.W. Logan of Langley Park

Account of expenses of working coal in Newbottle-Bournmoor Colliery, 31 Dec 1798 to 31 January 1799, in connection with the estate of the late John Nesham

Pay bills, stores accounts, accounts of landsale and accounts of work wrought at Margaret, Dorothea, Elizabeth and Success Pits, Newbottle Colliery, for John George Lambton

An account of the method of winning Newbottle Colliery, by Lord Lumley

Copy of the valuation of the late Countess of Durham's collieries at Sherburn, Shadforth and Littletown, by John Buddle.

Valuation of coal in Fenwick's Royalty at Middle Herrington, Houghton-le-Spring, by Edward F. Boyd

Specification for making bricks at Littletown, Frankland and Newbottle Collieries

Receipt for gunpowder supplied to the Earl of Durham for Over the Hill Farm, by Daniel Stokoe

Account of coal sold from Houghton Pit, Newbottle Colliery, to Thomas Robinson, 31 Dec 1862 - 31 Dec 1853, made 9 Feb 1854

Letter from George Hopper at Houghton-le-Spring Iron Works requesting the price of round coals from Dorothea Pit, Newbottle, and reply from R. Heckels at Bunker Hill

Mason's pay bills

List of names of men off work at Houghton Pit, Newbottle Colliery

Letter from Edward D. Welford of Houghton-le-Spring Gas Co to Mr Heckels at Houghton Pit, requesting the account due from the Gas Co

Account of smith's and joiner's work done at the Houghton Pit, Newbottle Colliery

Invoice for timber and other material, supplied by W. Coulson to the Earl of Durham from 22 Nov 1853 - 27 Dec 1854

Account of firebricks laid down at the Margaret Pit, Newbottle Colliery by Messrs Murray, Archbold, Jonason and Elliott for walling a new shaft

Accounts paid by the Earl of Durham for the board and lodging of workmen

Accounts paid by the Earl of Durham for the board and lodging of workmen

Board of Trade form sent to Richard Heckels, viewer at Lambton Wallsend Colliery, to be filled in on sending specimens of coal for the Collection of British Coals at the Paris Exhibition

Application by Thomas Oliver of Brick Garth, Easington Lane, for a position as overman

Levelling in Dorothea Pit [Newbottle Colliery] in the Three Quarter Seam, around shaft holings

Receipts for household removals, paid for by the Earl of Durham on behalf of workmen

Numbers of candles used in the Houghton and Dorothea Pits, Newbottle Colliery

Number of horses and ponies liberated by the use of the engine, by John Cowey

Number of coal tubs at the Houghton Pit, Newbottle Colliery, and where they are placed in the pit and above ground

Pitmen's bond for Newbottle Colliery, 5 April 1857 - 5 April 1858, made by George Frederick D'Arcy, Earl of Durham, of Lambton Castle, owner of Newbottle Colliery, signed by the Earl of Durham and witnessed by R. Heckels

Lists of subscriptions from workers at the Houghton and Margaret Pits, Newbottle Colliery, towards the Burradon Colliery disaster fund

List of subscriptions from workers at the Houghton Pit to the Hartley Colliery refief fund

List of subscriptions from workers at the Dorothea Pit to the Burradon Colliery disaster fund

Tenders for driving a dip stone drift in the Margaret Pit, Newbottle Colliery

Agreement on coal prices and wages from the men of Houghton Colliery to R. Heckels

Pitmen's bond for Lumley, Bourn Moor and Morton Collieries, 5 April 1859 - 5 April 1860, made by George Frederick D'Arcy, Earl of Durham, of Lambton Castle, colliery owner

List of Mason's apprentices, their ages and wages at Newbottle and Bourn Moor Collieries

Prices obtained for round coals, small coals and cinders at Hartlepool

List of hewers' shifts worked in the Dorothea Pit Five Quarter Seam at Newbottle Colliery

Price list of oils, tallow, grease, cottons, cloths, paints, varnishes and safety lamps, from H.J. Morton & Co, Leeds

Distances and depths taken to given an idea of the length of steam and exhaust pipes required for the Margaret Pit underground engine at Newbottle Colliery

List of masons and their places of work, account of brick stores at Harraton brickyard [Newbottle?]

List of children of Lord Durham's workmen attending Lady Londonderry's school at Shiney Row

List of overleadings paid per man each fortnight at Newbottle Colliery from No, 1 pay 1860 to No. 13 pay 1862

Copy of form sent by the British Association for the Advancement of Science, relating to underground railways at Newbottle Colliery

Particulars of an explosion and standing fire at Newbottle Colliery, by William Lishman, read at the Manchester Meeting

Article on the rebuilding of Lambton Castle, by Professor Sydney Smirke, read at the June 1865 meeting of the Northern Union of Mechanics Institutions, and article on the underground works carried out at Lambton Castle to prevent further subsidence due to mining, by R. Heckels, mining engineer

Copy of a counterpart lease of wayleave over Dean House Farm, Houghton-le-Springs, for the term of 42 years from 11 Nov 1863, from Misses Margaret, Isabella and Dorothy Wilson of Chester-le-Street, and others, to Hannah Jane Cochrane, 2 Place Nice Maritime, France, Robert Alexander Cockrane, Baynton House, Westbury, Wilts and others (partners of the Hetton Coal Co)

Copy of a counterpart lease of wayleave over Dean House Farm, Houghton-le-Spring, for the term of 21 years from 1 Jan 1865 for Misses Margaret, Isabella and Dorothy Wilson, Chester-le-Street, and others, to George Henry Robert Charles William Earl Vane, colliery owner

Tenders for driving three headways in the Lady Ann Hutton Seam

Valuation of Harraton Colliery, leased to the Earl of Durham, by Thomas F. Hedley, Sunderland

Valuation of Lumley 2nd Pit, leased to the Earl of Durham, by Thomas F. Hedley, Sunderland

3 Copies of a lease of coal mines at South Hylton, Bishopwearmouth, for the term of 63 years from 23 Nov 1872 from Thomas James Maling, Aspley Guise near Woburn, Bedford to Nicholas Raine, South Hylton, Bishopwearmouth

Production of round and small coals, hewers wages, and assumed selling prices, for the Herrington Pit, Newbottle Colliery, including proposal that Herrington hewers should accept the "Billy Fairplay" mode of working and payment

Valuation of the late Earl of Durham's collieries at Newbottle, Houghton, Herrington, Bourn Moor, Morton, Cocken, Brasside, Littletown, Sherburn House, Sherburn, Lumley and Harraton

Valuation of Newbottle and Morton leases to a purchaser

Valuation of the late Earl of Durham's collieries at Newbottle, Houghton, Morton, Sherburn, Sherburn House, Littletown, Brasside, Cocken and Lumley

Costs of making a railway into Horn & Scotts Quarry at New Penshaw

Pay bill for Herrington Pit, Maudlin, Five Quarter and Hutton Seams, Newbottle Colliery, for 21 July to 4 Aug 1888, and pay bills for shift, bargain, labouring and waste work and screening, in the Maudlin Seam, Herrington Pit, Newbottle Colliery

Report, by W.C. Blackett to W. Foggin, North Biddick Colliery, on testing Hutton Seam coal for gas making

Lease of wayleave within the Township of Warden Law, Houghton-le-Spring and East Burdon, Bishopwearmouth, for the term of 42 years from 13 Nov 1820 from William Hutchinson of Houghton-le-Spring to Archibald Cochrane, Eppleton, and others (the Hetton Coal Co)

Counterpart lease of coal mines in Houghton-le-Spring, for the term of 42 years from 13 May 1821 from George Townshead Fox, Westoe and Mary Crofton, South Shields, widow, to Archibald Cochrane, Eppleton, and others (the Hetton Coal Co)

Lease of wayleave in Houghton-le-Spring for Hetton Colliery for the term of 42 years from 13 Nov 1820 from William Ironside, Houghton-le-Spring to Richard Scruton, Durham, Archibald Cochrane, Eppleton, and others (the Hetton Coal Co)

Lease of wayleave over South Farrington, Farrington Hall and North Moor in Bishopwearmouth for the term of 42 years from 11 Nov 1820 from Anthony Hopper, Silksworth to Archibald Cochrane, Eppleton, Richard Scruton, Durham, and others (the Hetton Coal Co)

Lease of wayleave in Bishopwearmouth for the term of 42 years from 11 Nov 1820 from Thomas Hopper of Hendon House, Bishopwearmouth to Archibald Cochrane, Eppleton, Richard Scruton, Durham, and others, (the Hetton Coal Co)

Lease of wayleave over the north field and the mill field in Bishopwearmouth, about 14 acres, for the term of 42 years from 11 Nov 1820 from Solomon Chapman, Bishopwearmouth to Archibald Cochrane, Eppleton, Richard Scruton, Durham, and others (the Hetton Coal Co)

Lease of wayleave in Bishopwearmouth for the term of 42 years from 11 Nov 1820 from Wilfrid Lawson, Brayton House, Cumberland to Archibald Cochrane, Eppleton, Richard Scruton, Durham, and others (the Hetton Coal Co)

Counterpart lease of coalmines under the Eppleton Estate, Houghton-le-Spring, 526 acres for the term of 42 years from 11 Nov 1824 from Francis Mascall the elder, barrister, and Francis Mascall the younger, both late of Eppleton, and now of Red Lion Square, Middlesex to Archibald Cochrane, Eppleton, Houghton-le-Spring, George Baker, Elemore, Pittington Hall Garth, and others, including an estate plan of Eppleton

Lease of wayleave over a parcel of land of about 1 rood in Bishopwearmouth for the term of 42 years from 11 Nov 1821 from Barbara Collin, widow, Bishopwearmouth to Archibald Cochrane, Eppleton, Richard Scruton, Durham, and others (the Hetton Coal Co)

Lease of wayleave over Houghton and Warden Law Estates, Houghton-le-Spring, for the term of 42 years from 11 Nov 1820 from Rev John Hutton, Houghton-le-Spring to Archibald Cochrane, Eppleton, Richard Scruton, Durham, and others (the Hetton Coal Co)

Lease of coalmines in Hetton in the Hole, for the term of 42 years from 11 Nov 1820 from Ralph Skinner Gowland, Caen, Normandy, France to Archibald Cochrane, Eppleton, Richard Scruton, Durham, and others (the Hetton Coal Co)

Lease of coalmines in Hetton in the Hole, 114 acres, for the term of 42 years from 11 Nov 1820 from Wilfrid Lawson, Brayton House, Cumberland to Archibald Cochrane, Eppleton, Richard Scruton, Durham, and others (the Hetton Coal Co)

Lease of Lane House Farm, 130 acres and Houghton Way Farm, 70 acres, Hetton in the Hole, for the term of 21 years from 13 May 1821 from John Lyon, Hetton House, Houghton-le-Spring to Archibald Cochrane, Eppleton, Richard Scruton, Durham, and others, (the Hetton Coal Co)

Lease of coalmines under Hetton-le-Hole, Moorsley and Eppleton and elsewhere in Houghton-le-Spring for the term of 42 years from 11 Nov 1820 from John Lyon, Hetton House, Houghton-le-Spring to Archibald Cochrane, Eppleton, Richard Scruton, Durham, and others (the Hetton Coal Co)

Lease of liberty of outstroke from East Rainton into West Rainton, Moorsley, Pittington and Moorhouse for the term of 21 years from 20 July 1824 from the Dean and Chapter of Durham, the Very Rev Charles Henry Hall to Charles William Vane, Marquis of Londonderry

Deed of covenant for renewal of lease of a quay wharf at Bishopwearmouth for the term of 40 years from 13 May 1824 from the Rev Robert Gray, Doctor of Divinity and Rector of the parish church of Bishopwearmouth to Archibald Cochrane, Eppleton, George Baker, Elemore Hall, and others (the Hetton Coal Co)

Lease of staith room at Bishopwearmouth for the term of 21 years from 13 May 1824 from Rev Robert Gray, Doctor of Divinity and Rector of the parish church of Bishopwearmouth to Archibald Cochrane, Eppleton, George Baker, Elemore Hall, and others (the Hetton Coal Co), including a plan

Copy of lease of coalmines under Elemore, Hasting House, Low Haswell and Hetton on the Hill and elsewhere in Pittington, Easington and Houghton-le-Spring, for the term of 42 years from 12 May 1825 from George Baker, Elemore Hall to Archibald Cochrane, Eppleton, James Dalton of Croft, Yorks and others (the Hetton Coal Co)

Lease of coal mines under Moorsley for the term of 27 years from 25 March 1825 from Charles William Vane, Marquis of Londonderry, to William Russell, Brancepeth Castle

Assignment of life interest in certain coal rents from the Hazard and Dunwell pits, Houghton-le-Spring, being mined by the Marquis of Londonderry under lease from the Dean & Chapter of Durham from Charles Villiam Vane, Marquis of Londonderry to Robert Taylor of Newcastle

Lease of wayleave from Rainton to the River Wear near Penshaw, also a lease of messuages at the Hazard and Dunwell pits at East Rainton, Houghton-le-Spring, and of staiths on the River Wear for the term of 16 years from 23 March 1825 from Charles William Vane, Marquis of Londonderry to William Russell, Brancepeth Castle, including a map showing the position of the staiths

Confirmation by Charles Henry Hall, Dean and Chapter of Durham of a lease of wayleave from Rainton to the River Wear at Penshaw made between Charles William Vane, Marquis of Londonderry and William Russell of Brancepeth Castle

Articles of agreement on the mining of coal at Hetton and Moorsley, Houghton-le-Spring from Archibald Cochrane, Eppleton, George Baker, Elemore and others (the Hetton Coal Co) to William Russell of Brancepeth Castle, including plan of Hetton Estate, 8ch: 1", including key and showing position of pits

Lease of coalmines under Elemore, Hasting House, Low Haswell and Hetton on the Hill for the term of 63 years from 23 Nov 1836 from George Baker, Elemore Hall to Arthur Mowbray, Husworth, John Dunn, Durham and others (the Hetton Coal Co)

Counterpart agreement for the assignment of rights and interests in the Mansion House, Eppleton from Hannah Jane Cochrane, Nether Hall, Yorkshire, James Dalton, Croft, Yorkshire and others (the Hetton Coal Co) to the Durham and Sunderland Railway Co

Counterpart lease of coalmines under Hetton Moor Farm, Hetton-le-Hole for the term of 62 years from 23 Nov 1837 from George Hunter of Penshaw, colliery viewer, and Gilbert Wood, Whitworth, farmer, to Hannah Jane Cochrane, Nether Hall, Yorkshire, James Dalton, Croft, Yorkshire, and others (the Hetton Coal Co)

Agreement for a lease of coalmines in Seaton (nr. Seaham) for the term of 42 years from 12 May 1838 from William Greenwell, Kibblesworth and others (the Hetton Coal Co)

Lease of staiths at Bishopwearmouth for 21 years from Rev G.V. Wellesley, Rector of Bishopwearmouth to Hon. Mrs Cochrane and others, owners of Hetton Colliery

Assignment of leasehold mines and premises in Warden Law and Herrington for the purpose of vesting them in the trustees of the will of the late Elizabeth, Dowager Viscountess Barrington, from Hon. W. Keppell, Viscount Barrington to W. Robert Gamlen

Lease of coal mines at Hetton, Moorsley and Eppleton for 42 years from 11 Nov 1847 from William Earl of Dartmouth and others to Hon Hannah Jane Cochrane and others (Hetton Colliery Company)

Agreement and counterpart re the joint working of a tract of coal near Eppleton between George Fredrick D'Arcy and others for the Seaton Coal Company and Hannah Cochrane and others for the Hetton Coal Company, including plan of area to be worked

Lease of coal mines in the parish of Houghton le Spring for 42 years from 11 Nov 1849, including plan of the Little Eppleton Estate from Mrs Fox to the Hetton Coal Company

Lease of coal mines under the Carr House Estate for 42 years from 23 Nov 1849, including plan of the estate, from Edward Shippherdson to the Hetton Coal Company

Copy lease of coal mines in the townships of Burdon, Seaton, Slingley and Seaham for 63 years from 13 May 1852, from John Gregson to the Earl of Durham

Lease of coal, ironstone and fireclay at Houghton and Hetton le Hole for 42 years from 1 May 1856 from George and Robert James and others to W. Cochrane and others

Agreement re the purchase of coal tracts at Seaton Colliery and North Hetton between Lady Londonderry, the Earl of Durham and Seaton Coal Company, the settlement being undertaken to avoid court proceedings

Lease of a wayleave over Plains Estate for the Hetton Railway for 42 years from 23 Nov 1869, including plan of the estate, from Richard Lawrence Pemberton to the Hetton Coal Company

Lease of a wayleave over the Barnes Estate for the Hetton Railway for 42 years from 23 Nov 1860, including plan of the estate, from Richard Lawrence Pemberton and others to the Hetton Coal Company

Agreement to take a sub-lease of the Londonderry Colliery for 21 years from 28 Sept 1869 from the Marchioness of Londonderry to the North Hetton Coal Co

Lease of coal mines, ironstone and fireclay under the Slingley Hill Estate for 42 years from 12 Nov 1865, including plan of the estate, from Ursula Carr and others, to the Seaton Coal Company

Lease of coal at Hetton le Hole for 42 years from 11 Nov 1862 from R.H. Gowland and Miss Louisa Gowland to the Hetton Coal Company, including plan of lands leased

Lease of farmhouses, buildings and land at Lane House, Downs, Hemels, Houghton Way and Bromley Farms, Hetton le Hole and Eppleton from Francis Lyon Barrinton to Robert Alexander Cochrane and others (the Hetton Coal Co)

Lease of coalmines in Warden Law and East, West and Middle Herrington, parish of Houghton le Spring for 41 years from 27 April 1864, from the Ecclesiastical Commissioners to the Hetton Coal Co, including plan of the area leased

Lease of coal mines at Burdon for 42 years from 23 Nov 1878 from John Scott, Ford Hall and Richard Horn, Middlesex to the Seaton Coal Co

Bundle of deeds re the conveyance of Shield Row, Tanfield, parish of Chester le Street including agreements between William Porter, William Blakeston alias Blaxton and William Tempest, 1614 (2 deeds), Robert Tempest and William Blakeston, 1668, William Blakeston and Nicholas Blakeston, 1680, 1684 (2 deeds), Nicholas Blakeston, Francis Lawson and others and Sir John Swinburn, 1701 (2 deeds), Francis Lawson and Nicholas Blakeston, 1712 and deeds, legal papers and abstracts of title agreements between Sir Henry Liddell, George Bowes and others and William Blakeston, Sir Nicholas Conyers and John Dunn and others, 1728 - 1734 (15 deeds)

Bundle of deeds re coal mines at Swalwell and staiths and keelrooms on the River Derwent, parish of Whickham, including agreements between Mary and Henry Smyth and others and Lionel, Henry and William Blakeston of Gibside, 1632, Thomas Blakeston and Charles Montague, George Avery, James Shafto and George Usher, 1694 - 1705 (4 deeds) Ann Machon and Robert Spearman, 1722 (2 deeds), George Vane of Longnewton and others and George Bowes and Gibside, 1736 (2 deeds) and abstract of title

Bundle of deeds re property in Whickham and part of the Manor of Swalwell including agreements between Henry and George Shafto of Whickham and George Forster and John Pye, 1738 - 1739 (4 deeds) and Henry and George Shafto of Whickham and Thomas Shafto of Dunston, 1737 (2 deeds)

Bundle of deeds re property, including wayleaves in Whickham, including agreements between Henry Shafto, William Cotesworth, Sydney Wortley and others, 1723, Michael Crawforth and Sydney Wortley and others, 1723 and John Carr, Gateshead and Sydney Wortley and others

Lease and counterpart lease of collieries at Middle Causey, Chester le Street for 30 years from Robert Clavering to Charles Atkinson

Covenant and counterpart lease re coal mines at Tanfield, held under lease dated 5 Jan 1722, from Thomas Dawson, Tanfield to Sydney and Edward Wortley

Lease of staithroom and wharfs at Walker from the Mayor and Burgesses of Newcastle to George Liddell and William Cotesworth

Agreement re lands and wayleaves at Heaton between Richard Ridley and George Liddell and William Cotesworth

Lease of coal mines at Friars Goose and Gateshead for 18 years from William Ramsay to George Liddell, William Francis Baker and others

Lease of coal mines under Spanish Closes, Horse Close and Pinfold Close at Heaton for 25 years from Anne and Robert Babington to George Liddell and William Cotesworth

Lease of lands and collieries at Beamish and Tanfield for 41 years from William Davison, Beamish to Sydney and Edward Wortley and James Montagu

Lease of Heaton Colliery for the residue of a term of 25 years from Christopher Midford to William Cotesworth

Lease of Heaton Colliery for 25 years from Robert Midford to William Cotesworth

Agreement re George Pit, laying a waggonway from Tanfield Moor into the lands of Bowes and others to the waggonway or Wortley and partners to transport coal from Tanfield Moor to Dunston and Redheugh staiths and re conditions of work between Sydney and Edward Wortley, Henry and George Liddell, George Bowes and George Pitt

Lease of a wayleave over lands at Whickham for 99 years from William Barras and others to Sydney and Edward Wortley and others

Lease of coal mines under Berkley and Andrews House Farms and Byermoor for 11 years from Sir Francis Clavering to Sydney Wortley and others

Lease of coal mines under Hollingside and Riding Field, Whickham for 42 years from Ralph Harding to Sydney and Edward Wortley and others

Lease of a wayleave and staiths at Whickham for 99 years from William Barras, Whickham and others to Sydney and Edward Wortley and others

Agreement re a wayleave over lands at Heaton and settlement of a dispute re trespass for 30 years from Matthew White and Cuthbert Fenwick to Sydney and Edward Wortley and others

Lease of a wayleave at Tanfield Lea for 42 years from Gilbert Spearman to Sylney and Edward Wortley and others

Deed of sale of a moiety of land at Heaton from Robert Mitford to Timothy Hutchinson

Agreement for the continuation of a lease of collieries at Bucksnooth and Lintz leased from Richard Hodson to John Forster on 3 Jan 1726 from Gilbert Spearman to Sydney and Edward Wortley and others

Lease of lands at Easter Haugh, Whickham including Keel-berths and staiths on the River Team from Ralph and Richard Harding to Sydney and Edward Wortley and others

Lease of collieries at Heaton Banks for one year from Robert Midford to Timothy Hutchinson

Declaration re collieries leased by the Bishop of Durham to William Harrison on 6 Oct 1726, by William Harrison for John Smith and George Liddell

Declaration re the continuance of a lease made 8 Dec 1723 re wayleaves and waggonways at Whickham by the remaining partners, from John Carr to Edward Wortley and others

Agreement re mines at North Biddick held under lease dated 1 May 1724 between Charles and Joseph Davison, George Liddell and others and James Davison

Assignment of collieries at North Biddick between Charles and Joseph Davison, George Liddell and others and James Davison

Terms of an agreement for the lease of coal at Pockerley and Beamish between William Davison and Ralph Fetherstonhaugh for George Liddell and others

Bundle of deeds re coal mines at Cragghall, Jesmond including lease, release and bond by William Coulson to Thomas Ord and appointment of John Barnes and John Fairlamb as viewers to inspect the Matthew Pit shaft to determine the extent of the workings

Lease of coal mines at North and Middle Causey, including the liberty to lay waggonways and use watercourses for 97 years from Ralph Clavering and Charles Atkinson to Edward Wortley, George Liddell and others

Lease of a liberty to make watercourses over Tanfield Moor to drain Berkley Colliery and outstroke drifts at Tanfield Colliery, for 98 years, from Thomas Dawson to Edward Wortley and others

Counterpart lease of a moiety of the coalmines at Heaton Banks for 31 years from Christopher Midford to Edward Wortley and others

Conveyance of collieries at Stella and Winlaton from Robert Cotesworth and others to Henry Ellison in trust for George Liddell and others

Lease and release of coal mines under copyhold land at Deans Close, Tanfield, from John Ludworth to George Bowes and others

Partnership agreement between Sir Henry Liddell of Ravensworth, Edward Wortley of Wortley, George Bowes of Gibside, Thomas Ord of Newcastle, William Jessop of Grey's Inn, James Davey son of William Jessop and Richard Copper, executors under the will of Sydney Wortley, Elizabeth Cotesworth of Gateshead Park and Henry and Hannah Ellison of Gateshead Park

Lease of coal mines at Gosforth for 41 years from Thomas Ord to Sir Henry Liddell and Edward Wortley

Lease of a moiety of the coal mines at Heaton and Heaton Banks, from William Hutchinson and Robert Mitford to Joseph Legard, Sir Henry Liddell, George Liddell and Edward Wortley

Licence for the erection of a fire engine to raise water at Heaton Colliery for 3¼ years from 25 April 1730 from Thomas Beake, Henry Robinson, Edward Wallin, William Perkins and Cornelius Dutch all of London, members of a committee authorized by the proprietors of the invention of the engine to Edward Wortley and George Liddell

Declaration re collieries at Byker referring to an agreement made between Dame Jane Clavering, George Bowes, Richard Ridley, Nicholas Fenwick and Matthew White

Articles of agreement re Byker Colliery between William Bonner and George Liddell and Edward Wortley

Assignment of a lease of coal mines at North Biddick made from James Davison to Charles Davison and others on 1 May 1724, from Charles Davison and others to George Liddell and others, including schedules of debts contracted by the partnership

Lease of a wayleave over lands at New Benton or East Benton for 21 years from Thomas Hindmarsh to Sir Henry Liddell and others

Lease and release of coal mines at Heaton from Henry and Elizabeth Carr and Henry Ellison to Edward Wortley and others

Agreement re the cession of pillar working under a lease of 1701 to John Forster of Lintz 1701 at Spring Pit and Bogle Hole Pit, Tanfield between Robert Hodson and Ralph Hodson and Edward Wortley and partners

Lease of a wayleave from Collierly Colliery for 51 years from the Earl of Carlisle, Henry Francis Widdrington and others to Edward Wortley and others

Lease of collieries under Whinney House, Gateshead for 21 years from Philip Trumble to Sir Henry Liddell and others

Lease of a wayleave at Shield Row for 51 years from William Scafe of Bryans Leap to Sir Henry Liddell and others

Lease of coal mines at Shield Row for 31 years from William Scafe of Bryans Leap to Sir Henry Liddell and others

Agreement for the purchase of a moiety of the Stella and Winlaton Estates between George Bowes and the Earl of Carlisle

Assignment of a lease of Dean and Chapter premises on Heworth Common from James Longstaff to William Beilby

Agreement re collieries at Stella and Ryton held under lease to George Vane dated 16 Nov 1724, between George Vane and Sir Henry Liddell and others

Lease of Tanfield and South Causey Collieries for 7 years from Dulcibella Davison, widow ow William Davison to Sir Henry Liddell and others

Lease of a wayleave for a waggonway over lands at Walker for Little Benton Colliery, from Jane Sanderson to Sir Henry Liddell and others

Agreement re the extension of a lease to work coal at Beckley and Andrew's House Farms and North Pit, from Sir Francis Clavering to Edward Wortley and others

Agreement confirming the lease of collieries, staiths and wayleaves and other priviledges granted by the Corporation of Newcastle, 16 April 1726, between the Mayor and Burgesses of Newcastle to Sir Henry Liddell and others

Lease of Newbiggen Colliery for 9 years from the Earl of Carlisle to William Brown of Throckley Pit House

Assignment of a lease of Newbiggen Colliery from William Brown of Throckley Pit House to Christopher Rutter

Lease of Newbiggen Colliery for 8 years 11 months from Christopher Rutter to William Brown son of William Brown

Lease of a moiety of coal mines at Heaton for 1 year from William Hutchinson to Joseph Ledgard

Lease and release of a moeity of coal mines and wayleaves at Mill Close from Dixie Windsor and William Shippen to Sir Henry Liddell and Edward Wortley

Declaration of trust re leases of coal mines at Heaton and Heaton Banks from Joseph Legard to Sir Henry Liddell and others

Articles of agreement re working the Main Coal Seam at Heaton for 21 years from Wingate Pulleine Carleton and others to Sir Henry Liddell and others

Lease of coal mines in the Manor of North Biddick from James Davison and Fortune, his wife devisee under the will of Robert Carr to Sir Henry Liddell and others

Lease of Causey Colliery for 9 years from Ralph Clavering to Sir Henry Liddell and others

Lease of collieries at North and South Gosforth for 31 years from Ralph Brandling to Sir Henry Liddell and others

Agreement by Nathan Wetherall that Morton Davison, a minor, will on reaching majority execute a lease granted by his late mother and guardian Dulcibella Davison of coal mines in Tanfield to Sir Henry Liddell and others

Memoranda re a lease of lands at North Biddick from James Davison to Sir Henry Liddell

Lease and release of a fourth part of collieries at Heaton from Christopher Midford to Sir Henry Liddell and others

Lease of collieries at Longbenton for 92 years from the Earl of Carlisle to Sir Henry Liddell and others

Release of collieries at Heaton from Robert Midford to Sir Henry Liddell and others

Lease of a wayleave over lands at Little Benton for 89 years from Thomas and William Bigge to Sir Henry Liddell and others

Lease of 16 staithrooms at Walker Quay and wayleaves at Walker for a residue of a term of 34 years from the Mayor and Burgesses of Newcastle to Sir Henry Liddell and Edward Wortley

Bundle of copy conveyances, bonds and papers re collieries at Heaton leased from Christopher Midford to Sir Henry Liddell and others

Lease of Brackenbeds Colliery for 20 years from Henry Thomas Carr and Henry Ellison to Sir Henry Liddell

Lease and counterpart lease of coal mines and lease of wayleaves at Derwent Crook from Robert Ord to Sir Henry Liddell and others

Lease of coal mines under various closes at Gateshead including Friar's Goose, for 20 years from Henry Thomas Carr and Henry Ellison to Sir Henry Liddell and others

Lease of coal mines at Medomsley for 51 years from Cuthbert Hunter to Sir Henry Liddell and others

Lease of coal mines at Dinnington for 41 years from Sir Arthur Hesilrige to Sir Henry Liddell and others

Lease of collieries under Friar's Goose Farm from John Harris to Sir Henry Liddell and others

Agreement re a lease of collieries at Ponteland, Newburn, Stannington and Longbenton between Sir Arthur Hesilrige and Sir Henry Liddell and others