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