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Makers' surnames include: A[...], Abbot, Abraham, Abrahams, Achurch, Ackers, Adams, Adamson, Addis, Addison, Adey, Adkins, Adney, Aimwell, Ainge, Ainsworth, Alder, Aldridge, Aldworth, Allam, Allaway, Alcock, Allcock, Allen, Alleway, Allix, Allsop, Allwood, Alsop, Alstead, Amey, Amy, Amyot, Anderson, Anderton, Andrews, Angelo, Angier, Angot, Anott, Ansoll, Anson, Ant, Antill, Antram, Antrim.

Makers' surnames include: Barbarres, Barber, Barford, Barenger, Bargeau, Baringer, Barjohn, Barker, Barlow, Barnard, Barnes, Barns, Barnet, Barnett, Barnsley, Baron, Barput, Barraud, Barrett, Barret, Barrilett, Barrington, Barrow, Barry, Barston, Bartlett, Barton, Barugh, Barwell, Bashelin, Baskerville, Basomoine, Baston, Batard, Bateman, Bates, Bath, Batt, Batterson, Batyn, Baucamp, Baugh, Baxter, Bayes, Bayley, Baysallance.

Makers' surnames include: Biaudet, Biddle, Biddeston, Bidlake, Biggs, Bighten, Bill, Bille, Billinghurst, Bing, Bingley, Binks, Birchall, Bird, Birdsell, Birdwhistle, Birkhead, Birley, Birmingham, Bishop, Bishot, Bizot, Blackbrow, Blackborough, Blackborow, Blackburn, Blackbourne, Blackman, Blackmore, Blake, Blakescrum, Blakesly, Blakey, Blanchard, Bland, Blosterly, Blowers, Bludwick, Blundell, Blunt, Bly.

Makers' surnames include: Ceaser, Cecil, Cellar, Cha[...], Chalkhill, Chaman, Chamberlain, Chamberlaine, Chambers, Champion, Chance, Chancey, Chandler, Chapeau, Chaplyn, Chapman, Chappell, Chappuzeau, Charlston, Charleson, Charlson, Charlton, Chater, Chatfield, Chaunter, Chauvel, Chavanes, Chaves, Chesson, Cheltenham, Cheltham, Chetingham, Cheneviere, Cheriton, Cheshire, Chesnon, Chesson, Chester, Chevenix, Child, Chillcot, Chipling, Chittenham, Chitty, Chivers, Chotard, Chotarde, Chrichlow, Christmas, Chubb, Church, Churchill.

Makers' surnames include: Craig, Craig & Nevill, Cramer, Creamer, Cramilion, Crammillion, Crampton, Crane, Crathorne, Craythorne, Crayl, Crayle, Crayton, Creak, Creake, Creber, Cressener, Cripps, Crocker, Crocket, Crooke, Croome, Cross, Crossgrove, Crosthwaite, Crouch, Crown, Crucefix, Crumpe, Crumpton, Cuff, Cullenworth, Culpepper, Culverwell, Cumins, Cumming, Cummings, Cundall, Cureton, Currey, Curteen, Curtis, Cushee, Cusson, Cuthley.

Makers' surnames include: Dickie, Dickins, Dickson, Die, Dighton, Dingle, Dingley, Dinmore, Ditton, Dobney, Dobson, Dolland, Dolly, Dolley & Oldham, Dolphin, Donisthorpe, Dorrell, Douglas, Douglass, Dove, Dovers, Down, Downes, Downing, Dows, Dowse, Dowson, Drake, Draper, Draycott, Drew, Drossade, Drury, Dryden, Dryer, Drysdale, Dubedat, Duboys, Duchampe, Duchesne, Duck, Dudds, Dufour, Duhamel, Du Hamel, Dunant, Duncan, Dunlop, Dunster, Dupin, Dupont, Dupree, Dupuy, Duquesne, Durade, Duran, Dutan, Dutens, Dutertre, Dutton, Dwethouse (Dwerrihouse), Dyde, Dyke.

Makers' surnames include: Eagle, Earnshaw, East, Eastland, Eastwood, Eayres, Ebands, Eboral, Eborall, Ebsworth, Eccles, Eckert, Eckhert, Edey, Edgcomb, Edlin, Edlyne, Edmunds, Edwards, Edwin, Eggleton, Eichstedt, Elkins, Ellard, Elliot, Elliott, Ellis, Ellison, Ellott, Ellwood, Ellworthy, Elmson, Ely, Elys.

Makers' surnames include: Emblin, Emery, Emett, Emmerson, Emson, Endersby, Engin, Engui, England, English, Enys, Epson, Errick, Ericke, Errick, Errington, Erington, Erling, Erridge, Estienne, Estwick, Etherington, Ettry, Eusnach, Evans, Evens, Everal, Everell, Everett, Ewer, Ewers, Exelby.

Makers' surnames include: Fladgate, Flamsteed, Flavill, Fleece, Fleetwood, Fleming, Fletcher, Fleurieau, Flint, Flower, Flowerdale, Fly, Foden, Fogg, Foisseau, Folgham, Folkes, Fontaine, Fontaine & Torin, Foot / Poole?, Ford, Foardham (Fordham), Ferrister, Forster, Forsyth, Fort, Forte, Forter, Forth, Foster, Foubert, Fowler, Fowll, Frances, Francis, Franses, Franklin, Franksman, Fraser, Fravis, Free, Freedman, Fredman, Freeman, French, Fresh, Freshfield, Fricke, Frodsham, From, Fromanteel, Fromanteel & Clarke, Frost, Froust, Frowde, Fry, Fryer, Fuller, Furnesse, Futer.

Makers' surnames include: Hobart, Hobbs, Hocker, Hodd, Hoddle, Hodges, Hodgson, Hodson, Hoevenaar, Holborough, Holbrooke, Holder, Holle, Holland, Holle, Hollier, Hollis, Holloway, Holmes, Holroyd, Holstone, Holt, Holwell, Hone, Honey, Honeychurch, Hooker, Hoole, Hope, Hopkins, Hoppey, Horne, Horner, Horton, Huffman [Hougham], Houlgrave, Houillere, Houlliere, House, How, Howe, Howes, Howard, Howel, Howell, Howells, Hoyle.

Makers' surnames include: Ilbery, Ingleby, Ingram, Inkinson, Inkingson, Innis, Ion, Isaacson, Israel, Israels, Istead, Ives, Ivy, Jack, Jackman, Jackeman, Jakeman, Jackson, Jacob, Jacobs, James, Jamison, Jaques, Jardin, Jarrett, Jarratt, Jarvis, Gervis, Jay, Jeffery, Jeffryes, Jefferies, Jefferies & Jones, Jefferys, Jeffs, Jekyll, Jemson, Jenkins, Jenkinson, Jenner, Jennings, Jenins, Jensen, Jernegan, Jersey, Jervis.

Makers' surnames include: Joel, Johns, Johnson, Johnstone, Jolland, Jolly, Joly, Jon, Jones, Jordan, Jorden & Gordon, Joseph, Josephson, Joubert, Jourdain, Jourden, Jovat, Joyce, Jullion, Julliott.

Makers' surnames include: K. J., Keck, Kedden, Keeley, Kefford, Kehloff, Kelham, Kilham, Kellum, Kellway, Kelly, Kelsall, Kemp, Kempton, Kendall, Kendell, Kendrick, Kent, Kentish, Kerfoot, Ketcherside, Keton, Key, Kilby, Killingburgh, Kilman, Kilmister, Killminster, King, Kingsman, Kingston, Kinner, Kipling, Kirby, Kirk & Pigot, Kirkpatrick, Kirton, Kitchen, Klett, Knibb, Knight, Knodnott, Knottesford, Knotsford, Knox, Kohorn, Kover, Krenckel & Perrola, Kulibi.

Makers' surnames include: M[...], McCarty, McCulloch, MacDonald, Mace, Macey, Macham, Mackuhan, Maclinnan, McPherson, Maddle, Maddox, Maggs, Magson, Maintere, Maitland, Malacrida, Mallett, Mander, Mandey, Mangaar, Manly, Manley, Man, Mann, Mann & Ayscough, Manneville, Manning, Mansfield, Manton, Marbotin, Marchant, Margetts, Marey, Marie, Marrye, Markham, Markwick, Markwise, Marley, Marques, Marre, Marriage, Mariot, Marriott, Marryatt, Marsden, Marson, Marsh, Marshall, Martin, Martinet, Martineau, Martinot.

Makers' surnames include: J. P., John P[...], W. P., Packe, Padbury, Page, Paget, Paillet, Pailatt, Pain, Pallplat, Palmer, Pampillon, Pank, Pantin, Pape, Papillon, Paradise, Parbury, Pard, Pardoe, Parker, Parkes, Parks, Parkes & King, Parkinson & Frodsham, Parquot, Perquit, Parr, Parratt, Parsons, Partin, Parton, Partridge, Paterson, Patterson, Patrick, Pattison, Paul, Paulet, Paulson, Pauseau, Pay, Payne.

Makers' surnames include: Prentis, Presbury, Preston, Prestwood, Prethy, Prevost, Price, Prideaux, Pridham, Prigg, Priggs, Prince, Print, Prior, Pritchard, Privett, Proquate, Prou, Prusen, Pryor, Pryer, Puckridge, Pugh, Puller, Pumell, Puplet, Puplett, Purden, Purdy, Purnell, Pyke, Pike, Quelch, Quenovault, Quick, Quinholt.

Makers' surnames include: Stacey, Stafford & Briscoe, Stafford, Stamp, Stamper, Stanch, Stang, Stanhope, Stanley, Stansbury, Stanton, Stapleton, Staynor, Stead, Stebbing, Stede, Stedman, Steed, Steel, Steel & Co., Steele, Sterck, Stevens, Stephens, Sterrop, Stevenson, Stephenson, Stiles, Still, Stil, Stillings, Stilton, Stimson, Stock, Stockar, Stockdale, Stockton, Stokes, Stone, Stopes, Storr, Storer, Storey, Story, Strahan, Stratton, Street, Streight, Strek, Strelly, Stretch, Strigel, Strigner, Stroud, Stuard, Stumbels, Sturges, Sturgis, Stiles, Stile, Style, Styles, Sugar, Sully, Summerson, Summerset, Somerset, Sumner, Sumpter, Sunley, Suster, Sutton, Swan, Swayne, Swithen, Symonds, Symons.

Makers' surnames include: A. T., Talman, Tamson, Tomson [?], Tanner, Tanqueray, Tapscot, Farbock [Tarbock], Tarles, Tarleton, Tarr, Tarts, Tash, Taverner, Tawny, Tawney, Tayley, Taylor, Tayler, Telfer, Tempesaar, Tennett, Tennant [?], Terold, Terrier, Terrot & Thuillier, Terroux, Terry, Tesells [?], Thache, Theobold, Thierry, Thiolet, Thomas, Thomasson, Thomegay, Thompson, Thomson, Thorn, Thorne, Thornborough, Thornburgh, Thornton, Threlkeld, Thurayte, Thuret, Thwing, Tickell, Tiger [?], Tikschaw, Tiller, Tillier, Tills, Tilly, Timms, Timpson, Titzchkau.

Makers' surnames include: Ufford, Underwood, Unwin, Upham, Upjohn, Uring, Urings, Utting.

Makers' surnames include: Yarwell, Yates, Yeates, Yeadon, Yeoman, Yoakley, York, Young, Zouch.

Makers' surnames include: Daniel, Davis, Davison, Day, Debenham, Debnam, De Charmes, Delaunce, Delance, Dene, Dent, Denton, Derve, Dewe, Dickerson, Dingley, Dobson, Dorling, Dorrell, Dorrill, Draper, Drew, Drury, Duchesne / Du Chesne, Duhamel, Dunlop, Dupont, Dutton, Dwerihouse / Dwerryhouse.

Makers' surnames include: Gardner, Garfoot, Garon, Gascoigne, Gatton, Gavell, Gavelle, Gazuet, Gibbs, Gill, Giroust, Glazior, Glover, Goddard, Goode, Goodman, Gould, Grant, Gratte, Gravell & Tolkein, Gray, Gray & Vulliamy, Green, Gregg, Gregory, Gribelin, Griffith, Grimes, Grimwade.

Makers' surnames include: Irland, Ireland, Irving, Ismay.

Makers' surnames include: Sadler, Saer, Sagar, Sampson, Savage, Scafe, Schofield, Scott, Seddon, Sellers, Sewell, Seymour, Shaw, Shelton, Shepard, Simcock, Simcox, Simmons, Skeggs, Skilmore, Smith, Smithyes, Smyth, Snelling, Snow, Soldano, Sparkes, Speakman, Spencer & Perkins, Spinney, Spurgin, Stanton, Stearn, Stedman, Steele, Steevens, Stevens, Stevenson, Still, Stillwell, Stock, Stockar, Stock, Stocke, Stokes, Stone, Storr, Stretch, Stringer, Stubb, Stubbs, Style.

Makers' surnames include: Tantum, Taylor, Thatcher, Thompson, Thorne, Thornton, Threlkeld, Thwaites, Tipling, Tolley, Tomlinson, Tortore, Toulmin, Tracy, Trail, Traunter, Trattle, Tregent, Trigg, Trigge, Trippett, Trout, Trubshaw, Tucker, Turnbull, Twigg, Tyler.

Makers' surnames include: Uffington, Urquhart, Utting, Vale, Valentine, Vans, Vauloux, Vernon, Vick, Viens, Viet, Vincent, Vines, Vise, Vulliamy, Vulliamy & Gray.

Makers' surnames include: Wade, Wadleton, Wady, Waldron, Walker, Walley, Ward, Warden, Washbourn, Wasson, Watson, Watts, Wattson, Webb, Weller, Wells, Westoby, Wheeler, Whichcote, White, Whitebread, Whittaker, Whittingham, Wieland, Wightman, Wild, Wilkes, Wilkins, Williams, Williamson, Willoughby, Wilmot, Wilson, Wimble, Winckles, Wise, Wither, Withers, Woolley, Wood, Woodward, Woodworde, Wrench, Wreghit, Wright, Wyche, Wyld.

Makers' surnames include: Baddy, Baker, Barber, Barbot, Barnes, Barnett, Barrett, Barrow, Bartram, Bayley, Beauvais, Beckman, Bell, Bennett, Berry, Bertrand, Betts, Bird, Blackborow, Blackburn, Blackford, Blanchard, Blundell, Bocket, Borell, Bosley, Bouquet, Bousquet, Bowly, Box, Boyce, Bradford, Bradley, Brass, Bray, Brewer, Brulefer, Brockhurst, Bryant, Buck, Bugden, Bumstead, Burgis, Burgiss, Burgess, Bushman, Butcher, Butterfield, Byard.

Makers' surnames include: Cabrier, Camden, Cartwright, Charleson, Chotard, Clarke, Clark, Clay, Cleghorn, Cleland, Clement, Clowes, Cole, Coleby, Collyer, Colston, Cotsworth, Cotton, Coulton, Coupe, Cowpe, Craike, Creak, Cressener, Crisp, Crockford, Crucefix, Cumming.

Makers' surnames include: Darke, Davidge, Davies, Davis, Debaufre, De Charmes, Delafosse, Delander, Dent, De St. Leu, Dewe, Dickie, Dingley, Dobson, Doughty, Drew, Drury, Du Chesne, Du Hamel, Dunlop.

Makers' surnames include: Haley, Hall, Hally, Halsey, Ham, Handiside, Harding, Harper, Harris, Harrys, Harwood, Hassenius, Hasenus, Hayle, Hebert, Hemings, Hemins, Herbert, Hester, Hewitt, Hewett, Heyes, Higgs, Hilderson, Hildeyard, Hill, Hindley, Hitchin, Hobart, Hoddle, Hodges, Holmes, Hough, Howes, Hubert, Hubson, Hughes, Humphreys, Hunt, Hunter.

Makers' surnames include: Rainsford, Raymond, Raynsford, Richardson, Rigg, Rimbault, Rivers, Roberts, Robin, Robins, Robinson, Rogers, Romley, Rontree, Rule.

Includes correspondence, cutouts and photocopies of catalogue listings, journal articles, draft articles, photographs and notes.

Includes correspondence, photocopies of seventeenth- and eighteenth-century newspaper extracts, photocopies of journal, dictionary and draft articles, photographs and notes.

Makers' surnames include: Jacques, Jeffs, King / De King, Lindsay, Long, Martin, Merriman, Merryman, Newborough, Newbrough, Northcote, Paine, Parker, Rasher, Reith, Robinson. The file contains correspondence, cutouts and photocopies of catalogue listings, photographs and notes.

Makers' surnames include: Seignior, Sharpe, Smith, Sully, Tolley, Vick. The file contains correspondence, cutouts and photocopies of catalogue listings, photographs and notes.

Includes copy of Malcolm Gardner (Charles Allix) article on the sale of a collection of 16 quarter repeater watches published in Antiquarian Horology September 1976; lists of Graham's repeater watches, and correspondence mainly with Thomas Cox, Florida, USA, regarding their sales; copy extract from "The Astronomical Clocks at Greenwich" (1975), an article by Howse mentioning Graham 1 and Graham 2 clocks; copies of articles on George Graham's life and work, including by Jeremy Evans (1995) and C. Doris Hellman (1931); a handwritten extract from Graham's 1726 article for Watchmaker; and photocopies of sale catalogues showing Graham clocks.

Includes blueprint of gravity escapements; booklet of lesson 2/12 of British Horological Institute's "Correspondence Course in Technical Horology"; ball and roller bearings metric conversion tables; notes; correspondence regarding the manufacture of wheels and pinions; The Horological Journal article on "A Criticism of the ... Gravity Escapement" by O.B. Hutchinson; 1917 letter from A. Bertlain [?] with a design for a three-legged Grimthorpe escapement; five photographs; and a bundle of correspondence and photographs relating to the regulator clock by Isaac Jackson (1796–1862).

J. E. Haswell (1890–1967) was the director of R. Haswell and Sons (tool and material business), the author of Haswell's Horology textbook, and a member of the Worshipful Company of Clockmakers. File includes C. Allix's correspondence with Haswell, mainly concerning his book; Allix's correspondence with Mrs Edna Haswell, mainly regarding the estate of her late husband and the sale of items belonging to him; Haswell's obituary by C. Allix published in The Horological Journal; and obituary press cuttings.

Henry Hindley (1701–71) was a clockmaker and inventor based in York. File includes correspondence with Charles Taylor; copy page from Sotheby's sales catalogue (2002) listing a clockmaker's sector by Hindley; a newspaper advertisement and description of a mahogany clock from the workshops of H. Hindley, annotated "certainly not"; and 17 colour photographs of the clock provided by the seller, Northern Clocks.

Courtenay Adrian Ilbert (1888–1956) was a civil engineer and watch and clock collector; his collection was eventually acquired by the British Museum. File includes Charles Allix's correspondence with C.A. Ilbert; Malcolm Gardner's correspondence with solicitors regarding the estate of the late C.A. Ilbert and the valuation of his horological collection of clocks and books; lists of clocks, etc.

Includes letter, draft Jump family tree compiled by Col. H. Quill, notes, sketches and newspaper and catalogue cuttings.

Includes correspondence with Prescot Mechanism Company and other organisations and individuals; press cuttings; copies, reprints and extracts from horological journals, publications and catalogues; flyer and programme for at City of Liverpool College course in Aspects of Horology held in 1983; and photographs.

James Reith was apprenticed in 1698 and became the vice director of a watch manufactory in Versailles, France. File includes extracts from sales catalogues, technical descriptions, biographical information, invoices, photographs, and related correspondence.

Edwin Robert Sills (d. 1943) of Tottenham was a watch and chronometer finisher. File includes handwritten letters and an extract from the Clockmakers' Library Catalogue.

Bound printed script of R.F. Carrington's presentation given to the East Anglian Section of the AHS at Manor House Museum, Bury St Edmunds, on 20 March 1993. 46 pages.

Bound printed script of R.F. Carrington's presentation given to the London Section of the AHS at the Science Museum, London, on 21 April 1994. 45 pages. Also includes slides and related correspondence.

Handwritten extracts from volumes 101–195 of policy register series MS 11936, including an alphabetical name index and individual policy details.

Handwritten extracts from volumes 300–399 of policy register series MS 11936, including an alphabetical name index and individual policy details.

Bound printed alphabetical list of names of clockmakers, watchmakers, jewellers and other horology-related professionals, compiled by R.F. Carrington from four series of fire policy registers of the Royal Exchange Assurance Company (The London Archives ref. CLC/B/107/02/MS07252–MS07255). Gives name, policy register volume number, placename and occupation.

Handwritten extracts from volumes 46–83 of the fire policy register MS 7254, including an alphabetical name index and individual policy details. Volumes 1-45 of this series do not survive.

Notebook, 47 pages, containing John W. Castle's handwritten notes, mostly on individual clocks, and some drawings. A signed note on inside cover reads "The notes in this book represent hours of research in museums and libraries all over England and half Europe".

Bound typescript, 11 chapters. Contents: 1) A little history; 2) Some lost treasures; 3) The Strasburg Clocks; 4) The Great Clock of Prague; 5) The Astronomical Clock of Lyons; 6) The Jacquemart Clock at Dijon; 7) The Zimmer Clock of Lierre; 8) The Clock Tower of Berne; 9) The Clock of Lund; 10) The Lubeck Clock; 11) Some minor marvels.

Typescript and six photographs, including "La joueuse de tympanon" and "Oiseaux chanteurs" from Musée du Conservatoire National des Arts et Metiers in Paris, St Mark's Clock Bell in Venice, and various figurines from the British Museum.

Includes letters, six photographs and a drawing.

Includes over 25 photographs and photographic postcards and six articles on chiming clocks, Thomas Tompion clocks, curious clocks, "Pendulum to Atom" exhibition, and a number of other individual clocks.

Includes an order form brochure for the book on Jens Olsen's astronomical world-clock by Otto Mortensen (1957), two photographic postcards and envelope.

Includes letters, three press cuttings, and 17 photographs and photographic postcards.

One typewritten letter. Also includes a seemingly unrelated handwritten and undated (incomplete?) letter to "Mr Genge [?]".

Includes typewritten letters, eight photographs and envelope.

Includes a typewritten letter and an article on "The Strasbourg Clocks", and ten photographs and photographic postcards.

Includes an extract from Vitruvius on sundials and waterclocks, a journal page showing "A Strange House in Fex", articles from Newles Practical Mechanics, pages from The Antique Dealer and Collectors' Guide; letters from the Moroccan Embassy in London, The Science Museum, and Prof. Paul D. Espinasse of Hull University, handwritten notes and sketches, and 20 photographs and photographic postcards.

Includes letters, order forms, rules for ordering and sale of photographs, and two photographs.

Includes typescript of an article on "The Clockmakers of Surrey, Middlesex and Hertfordshire"; handwritten and typescript lists of individual makers 1516–1830; scrap notes; handwritten notes taken from The Economic History of England by E. Lipson (1915); a catalogue leaflet for Rita Shenton's bookshop (specialist horological bookseller); two b/w photographs of a longcase clock by James Douglas Chertsey; small print of a view of Southwark Cathedral; and a tourist guide to Islington.

Includes handwritten notes, some on scrap paper; a typescript report on a rebuild of a thirty-hour old English longcase clock; correspondence with Reigate and Banstead Borough Council re. longcase clock signed William Budgen; descriptions of an electric wall clock signed "F. Booker Forest Hill" and a multi-dial wall regulator made in 1899 by Arthur Kinder, etc.

Contains snapshots and portraits from Paris, Lyons and Besancon (38 b/w photographs, captioned, one loose and the rest pasted onto 7 cards); two photographic postcards; three banquet menus (two with guests' signatures); map of Paris public transport; and Lily Hudson's Foire de Paris pass. Captions do not give names of people in the photographs.

Contains three b/w photographs, uncaptioned, loose, showing seated audience and men inspecting chronometers or pocket watches.

Contains four colour photographs, uncaptioned, loose, showing people boarding a coach, posing for the portrait and seated at a dinner table.

Names include Thomas Herbert, Joseph Autram, Richard Vick, Francis Robinson, Thomas Cartwright, Benjamin Gray, George Lindsay, John Ellicot, Benjamin Vulliamy, and Thomas Mudge. Includes a few pages at back on earlier sources.

Handwritten, made by Eileen Bunt. The original book was donated to Guildhall Library on the death of its owner and is held there under ref. CLC/B/227/MS23726/001.

Also includes notes. Map not included.

Also includes two b/w photographs.

Also includes eight photographs, typescripts of "Further notes on some Westmoreland Clock and Watch Makers" (1962) and "Former Clock- and Watch-makers of North Lonsdale" by J.L. Hobbs; handwritten notes on clocks, handwritten draft of L. Northcote's review of Clockmaking in Oxfordshire 1400–1850 by C.F.C. Beeson (1962) with a cover letter, and a copy of Cake and Cockhorse: the magazine of the Banbury Historical Society vol. 1 no. 2 (1961/62).

Photocopies of annotated typewritten notes on aspects of the clock: chiming, striking to the nearest second, winding by electric motor, summertime. Includes diagram.

Contains handwritten notes and tracings.

Contains sketches and tracings.

Contains annotated sketches and tracings.

Contains handwritten notes, sketches and tracings.

Contains one tracing of backplate only.

Contains annotated sketches and tracings.

Contains typewritten description, annotated sketches and tracings.

Contains annotated sketches and tracings.

Contains annotated sketches and tracings. Originally numbered "C25-25a".

Contains one sketch and tracing.

Contains annotated sketches.

Contains notes and tracings.

Contains notes only.

Contains one note only.

Contains letter from Mrs F. H. Pratt and sketches of back and front plates.

Contains one note only.

Contains annotated tracing of old backplate.

Contains handwritten notes, sketches, tracings and cutouts.

Contains annotated sketches.

Contains handwritten notes, sketches and tracings.

Contains annotated tracing.

Contains handwritten notes, sketches and tracings.

Contains handwritten notes, sketches and tracings.

Contains handwritten notes, sketches and tracings.

Contains handwritten notes, sketches and tracings.

Contains handwritten notes, sketches and tracings.