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Drawings of geared motor unit
PART OF:
Design drawings
Made:
1970-02
part of archive:
Archival material relating to the firm of H.N. Irving & Son, instrument makers
maker:
H.N. Irving & Son
Details
Extent:
9 items
Identifier:
IRV/D/1
Access:
Open Access
copyright:
Show
Copies may be supplied in accordance with current copyright legislation and Science Museum Group terms and conditions
Browse this archive
Archival material relating to the firm of H.N. Irving & Son, instrument makers
IRV/A Business correspondence and invoices
IRV/A/001 Astronomical Equipment. Business File
IRV/A/002 Anders Electronics Ltd. Business File
IRV/A/003 George Angus & Co. Ltd. Business File
IRV/A/004 Arrow Hart (Europe) Ltd. Business File
IRV/A/005 Autoflow Engineering Ltd. Business File
IRV/A/006 Banner Electric Co. Ltd. Business File
IRV/A/007 Malcolm Bell Ltd. Business File
IRV/A/008 F. Bullett & Co. Business File
IRV/A/009 Berco Controls Ltd. Business File
IRV/A/010 British Oxygen Co. Ltd. Business File
IRV/A/011 Crouzet Ltd. Business File
IRV/A/012 Dowty Seals Ltd. Business File
IRV/A/013 Electronic Optics Ltd. Business file.
IRV/A/014 Engineering Supplies (Surrey) Ltd. Business file
IRV/A/015 Eltron (London) Ltd. Business file.
IRV/A/016 The Emerson Optical Co. Ltd. Business file.
IRV/A/017 J. E. Faulkner & Son. Business file.
IRV/A/018 H.S.S. Ltd. Business file
IRV/A/019 Dudley K.M. Fuller. Business file
IRV/A/020 Charles Frank Ltd. Business file.
IRV/A/021 Pillar Engineering Supplies Ltd. (H.S.S. Stedall) Business file.
IRV/A/022 Fullerscopes Ltd. Business file.
IRV/A/023 Gedge & Co. (Clerkenwell)Ltd. Business file.
IRV/A/024 Highgate Optical Ltd. Business file
IRV/A/025 David Hinds Ltd. Business File
IRV/A/026 T.A. Hutchinson Ltd. Business file.
IRV/A/027 T. & W. Ide Ltd. Business file
IRV/A/028 Imhof-Bedco Ltd. Business file.
IRV/A/029 Klaxon Ltd. Business file.
IRV/A/030 Kingston Photographic Services Ltd. Business file.
IRV/A/031 The Langham Press Ltd. Business file.
IRV/A/032 Leech (Rochester) Ltd. Business file.
IRV/A/033 Londex Ltd. Business file.
IRV/A/034 London Metal Warehouses Ltd. Business file
IRV/A/035 Claude Lyons Ltd. Business file
IRV/A/036 Victor Moyle & Co. Ltd. Business file.
IRV/A/037 National Physical Laboratory. Business file
IRV/A/038 Negretti & Zambra Ltd. Business file.
IRV/A/039 S.E. Opperman Ltd. (Opperman Gears Ltd.) Business file
IRV/A/040 Optical Instruments (Balham) Ltd. (Optical Surfaces Ltd.) Business file
IRV/A/041 United Marine (1939) Ltd. Business file
IRV/A/042 H. Wildey. Business file
IRV/A/043 MM02 Share Certificates
IRV/A/044 Party Wall Act
IRV/A/045 Astro Systems Ltd. Business file
IRV/A/046 Accounts to be paid. Business file.
IRV/A/047 Molar Products Ltd. Business file.
IRV/A/048 Chance-Pilkington, Pilkington Brothers Ltd. Business file.
IRV/A/049 London Borough of Richmond. Business file
IRV/A/050 The Micanite & Insulators Co., Ltd. Business file.
IRV/A/051 Manganese Bronze Ltd. Business file.
IRV/A/052 Malden Founders Ltd. Business file.
IRV/A/053 Macready's Metal Co. Ltd. Business file.
IRV/A/054 Exico Ltd. Business file.
IRV/A/055 Latest orders for filing. Business file.
IRV/A/056 Enquires A. Business file
IRV/A/057 Enquires B. Business file
IRV/A/058 Enquires C. Business file
IRV/A/059 Enquires D. Business file
IRV/A/060 Enquires E. Business file
IRV/A/061 Enquires F. Business file
IRV/A/062 Enquires G. Business file
IRV/A/063 Enquires H. Business file
IRV/A/064 Enquires J. Business file
IRV/A/065 Enquires K. Business file
IRV/A/066 Enquires L. Business file
IRV/A/067 Enquires M. Business file
IRV/A/068 Enquires N. Business file
IRV/A/069 Enquires O. Business file
IRV/A/070 Enquires P. Business file
IRV/A/071 Enquires R. Business file
IRV/A/072 Legal documents, Personal file
IRV/A/073 Enquires S. Business file
IRV/A/074 Enquires T. Business file
IRV/A/075 Enquires U & V. Business file
IRV/A/076 Enquires W. Business file
IRV/A/077 Enquires X, Y & Z. Business file
IRV/A/078 Income Tax. Business file
IRV/A/079 Advertising: H.A. Collins. Business file
IRV/A/080 Advertising : British Astronomical Society. Business file
IRV/A/081 Advertising: Hermes Magazine. Business file
IRV/A/082 Architect. Personal File
IRV/A/083 Electricity Board. Business file.
IRV/A/084 South Eastern Gas Board. Business file
IRV/A/085 Confederation Life Assurance . Business file.
IRV/A/086 Medicihaus GmbH. Business file.
IRV/A/087 The British Internal Combustion Engine Research Institute, Ltd. Business file
IRV/A/088 Physikalisch-Technische Bundesansfalt. Business file.
IRV/A/089 Swiss Office of Weights and Measures. Business file.
IRV/A/090 Laborelec Laboratoire, Business file.
IRV/A/091 Sulzer Brothers Ltd. Business file.
IRV/A/092 Completed orders. Business file.
IRV/A/093 Completed orders. Business file.
IRV/A/094 Thermometer Testing Baths. Business file.
IRV/A/095 Thermometer Testing Baths. Business file.
IRV/A/096 Completed orders A. Business file.
IRV/A/097 Completed orders B. Business file.
IRV/A/098 Completed orders C. Business file.
IRV/A/099 Completed orders D. Business file.
IRV/A/100 Completed orders E. Business file.
IRV/A/101 Completed orders F. Business file.
IRV/A/102 Completed orders C.H.Frye. Business file.
IRV/A/103 Completed orders G. Business file.
IRV/A/104 Completed orders H. Business file.
IRV/A/105 Completed orders J. Business file.
IRV/A/106 Completed orders L. Business file.
IRV/A/107 Completed orders H & K. Business file.
IRV/A/108 Completed orders M. Business file.
IRV/A/109 Completed orders N. Business file.
IRV/A/110 Completed orders O. Business file.
IRV/A/111 Completed orders P. Business file.
IRV/A/112 Completed orders R. Business file.
IRV/A/113 Completed orders S. Business file.
IRV/A/114 Completed orders T. Business file.
IRV/A/115 Completed orders U & V. Business file.
IRV/A/116 Completed orders W. Business file.
IRV/A/117 Completed orders X. Y & Z. Business file.
IRV/A/118 Letters not answered. Business file
IRV/A/119 A.E.I. Business file
IRV/A/120 Admiralty Surface Weapons Establishment. Business file.
IRV/A/121 Airflow Developments Ltd. Business file
IRV/A/122 Atomic Energy Establishment. Business file.
IRV/A/123 British Petroleum Co. Ltd. Business File
IRV/A/124 British Thomson-Houston Co. Ltd. Business File
IRV/A/125 Cambridge Instrument Co. Ltd. Business file.
IRV/A/126 Clarke, Chapman & Co. LTD. Business file.
IRV/A/127 Central Electricity Research Laboratories. Business file.
IRV/A/128 C.N.S. Instruments Ltd. Business file.
IRV/A/129 Eltron (London) Ltd. Business file.
IRV/A/130 Glasshouse Crops Research Institute. Business file.
IRV/A/131 Hawker Aircraft Ltd. Business file.
IRV/A/132 Heto Lab Equipment Business file.
IRV/A/133 Messrs. Akadimport, Budapest, Hungary. Business file
IRV/A/134 Imperial Chemical Industries Ltd. Business file.
IRV/A/135 Indian Government. Business file.
IRV/A/136 International Combustion Ltd. Business file.
IRV/A/137 H.N. Irving & Son. Business file.
IRV/A/138 Iranian Oil Services Ltd. Business file.
IRV/A/139 Labimex, Poland. Business file.
IRV/A/140 Marconi Wire and Telegraph Co. Ltd. Business file.
IRV/A/141 Merz & McLellan. Business file.
IRV/A/142 Mechanical Engineering Research Laboratory. Business file
IRV/A/143 Metal Box Co. Ltd. Business file
IRV/A/144 Metropolitan-Vickers Electrical Co. Ltd. Business file.
IRV/A/145 Miscellaneous. Business file
IRV/A/146 Ministry of Defence. Business file.
IRV/A/147 Northampton College of Technology. Business file.
IRV/A/148 National Physical Laboratory. Business file
IRV/A/149 Pakistan High Commission. Business file.
IRV/A/150 C.A. Parsons & Co. Ltd. Business file.
IRV/A/151 Photographs Testing Baths. Business file.
IRV/A/152 Pirelli General. Business file.
IRV/A/153 Poland. Business file.
IRV/A/154 Photographs of Telescopes. Business file.
IRV/A/155 Rheostatic Co. Ltd. Business file.
IRV/A/156 Rolls Royce. Business file.
IRV/A/157 St. John's Hospital. Business file.
IRV/A/158 A. Saied, Esq. Business file.
IRV/A/159 Shell Petroleum Co. Ltd. Business file.
IRV/A/160 South Africa. Business file.
IRV/A/161 Swiss Office of Weights and Measures. Business file.
IRV/A/162 United Marine (1939) Ltd. Business file
IRV/A/163 Varimex, Poland. Business file.
IRV/A/164 Wiring Circuits. Business file.
IRV/A/165 Rencol. The Ray Engineering Co. Ltd. Business file.
IRV/A/166 Renold Ltd. Business file.
IRV/A/167 J. Smith & Sons (Clerkenwell) Ltd. Business file.
IRV/A/168 Scientific Lens Co. Ltd. Business file.
IRV/A/169 Southborough Sheet Metal Works Ltd. Business file.
IRV/A/170 Taylor Stainless Metals Ltd. Business file.
IRV/A/171 NYBY BRUKS AB, Sweden. Trade catalogue.
IRV/A/172 Thomas Tingley Ltd. Business file.
IRV/A/173 Turners Asbestos Cement Co. Ltd. Business file.
IRV/A/174 United Marine (1939) Ltd. Business file
IRV/A/175 Edgar Vaughan and Co. Ltd. Business file
IRV/A/176 Reo Stainless Ltd. Business file.
IRV/A/177 Lionel Robinson & Co. Ltd. Business file.
IRV/A/178 Omega Plastics Ltd. Business file
IRV/A/179 Optical Surfaces Ltd. Business file
IRV/A/180 Drawing.
IRV/A/181 Air Pump Photographs.
IRV/A/182 Water bath Photographs.
IRV/A/183 Sasol One (Proprietary) London Ltd. Business file.
IRV/A/184 Telescope Photographs.
IRV/A/185 Correspondence
IRV/A/186 Correspondence
IRV/A/187 Correspondence
IRV/A/188 Orders placed by H. N. Irving & Son.
IRV/A/189 Outstanding Accounts.
IRV/A/190 Completed orders. Business file.
IRV/A/191 Completed orders. Business file.
IRV/A/192 Paid invoices. Business file.
IRV/A/193 Paid invoices. Business file.
IRV/A/194 Paid invoices. Business file.
IRV/A/195 Paid invoices. Business file.
IRV/A/196 Paid invoices. Business file.
IRV/A/197 Paid invoices. Business file.
IRV/A/198 Miscellaneous Correspondence
IRV/A/199 Miscellaneous Correspondence
IRV/A/200 Miscellaneous Correspondence
IRV/A/201 Negretti & Zambra Ltd. Business file.
IRV/A/202 Negretti & Zambra Ltd. Business file.
IRV/A/203 Negretti & Zambra Ltd. Business file.
IRV/A/204 Negretti & Zambra Ltd. Business file.
IRV/A/205 Negretti & Zambra Ltd. Business file.
IRV/A/206 Negretti & Zambra Ltd. Business file.
IRV/A/207 Negretti & Zambra Ltd. Business file.
IRV/A/208 Negretti & Zambra Ltd. Business file.
IRV/A/209 Negretti & Zambra Ltd. Business file.
IRV/A/210 Negretti & Zambra Ltd. Business file.
IRV/A/211 The Curtis Manufacturing Co. Ltd.
IRV/A/212 D.H. Derbyshire, Charterhouse
IRV/A/213 Imperial College of Science and Technology. Business file.
IRV/A/214 R.W. Panther. Correspondence.
IRV/A/215 Pioneer Oilsealing & Moulding Co. Ltd. Business file.
IRV/A/216 Radio and Space Research Station. Business file.
IRV/A/217 Ricardo & Co. Engineers (1927) Ltd. Business file.
IRV/A/218 R.R. Strand. Business file.
IRV/A/219 J.C. Sattele. Business file
IRV/A/220 The Standwell Equipment Co. Ltd. Business file
IRV/A/221 Dr. J.F.A. Swartz, University of Stellenbosch, S. Africa. Business file.
IRV/A/222 Shandon Scientific Co. Ltd. Business file
IRV/A/223 F.G Sturgeon, Engineer. Business file.
IRV/A/224 Twickenham Plating Co. Ltd. Business file
IRV/A/225 Technical Platings Ltd. Business file.
IRV/A/226 The Thermal Syndicate Ltd. Business file.
IRV/A/227 Parts required for Deep Sea Thermal Bath.
IRV/A/228 University College London. Business file.
IRV/A/229 Scot Urquhart Ltd. Business file.
IRV/A/230 H. Wildey. Business file
IRV/A/231 G.E. Williamson. North London Iron Works. Business file.
IRV/A/232 Business file A
IRV/A/233 Business file B
IRV/A/234 Business file C
IRV/A/235 Business file D
IRV/A/236 Business file E
IRV/A/237 Business file F
IRV/A/238 Business file G
IRV/A/239 Business file H
IRV/A/240 Business file I
IRV/A/241 Business file L
IRV/A/242 Business file M
IRV/A/243 Business file N
IRV/A/244 Business file O
IRV/A/245 Business file P
IRV/A/246 Business file R
IRV/A/247 Business file S
IRV/A/248 Business file T
IRV/A/249 Business file V
IRV/A/250 Business file Miscellaneous
IRV/B Documents relating to hypsometer “test baths”
IRV/B/01 NPL Business File
IRV/B/02 Sketches and drawings
IRV/B/03 Drawing No. YI - 02482
IRV/B/04 Drawing No. YI - 02483
IRV/B/05 Tender No. M1432Y1
IRV/B/06 Tender No. M1432Y1
IRV/B/07 Instructions
IRV/B/08 Report
IRV/B/09 Drawing
IRV/B/10 Rumere Ltd. Business File
IRV/B/11 Business file
IRV/B/12 Drawing No. B.A.C 2837/8
IRV/B/13 Drawing No. BOA-B 2815
IRV/C Order books and cash books
IRV/C/1 Advice notes to suppliers
IRV/C/1/01 Advice Note 2 - 100
IRV/C/1/02 Advice Note 101 - 200
IRV/C/1/03 Advice Note 201 - 300
IRV/C/1/04 Advice Note 301 - 400
IRV/C/1/05 Advice Note 401 - 500
IRV/C/1/06 Advice Note 501 - 600
IRV/C/1/07 Advice Note 601 - 700
IRV/C/1/08 Advice Note 701 - 800
IRV/C/1/09 Advice Note 801 - 900
IRV/C/1/10 Advice Note 901 - 1000
IRV/C/1/11 Advice Note 1001 - 1100
IRV/C/1/12 Advice Note 1101 - 1200
IRV/C/1/13 Advice Note 1201 - 1300
IRV/C/1/14 Advice Note 1301 - 1400
IRV/C/1/15 Advice Note 1401 - 1500
IRV/C/1/16 Advice Note 1501 - 1600
IRV/C/1/17 Advice Note 1601 - 1700
IRV/C/1/18 Advice Note 1701 - 1800
IRV/C/1/19 Advice Note 1801 - 1900
IRV/C/1/20 Advice Note 1901 - 2000
IRV/C/1/21 Advice Note 2001 - 2100
IRV/C/1/22 Advice Note 2101 - 2200
IRV/C/1/23 Advice Note 2201 - 2300
IRV/C/1/24 Advice Note 2301 - 2400
IRV/C/1/25 Advice Note 2401 - 2500
IRV/C/1/26 Advice Note 2501 - 2600
IRV/C/1/27 Advice Note 2601 - 2700
IRV/C/1/28 Advice Note 2701 - 2800
IRV/C/1/29 Advice Note 2801 - 2900
IRV/C/1/30 Advice Note 2901 - 3000
IRV/C/1/31 Advice Note 3001 - 3100
IRV/C/1/32 Advice Note 3101 - 3200
IRV/C/1/33 Advice Note 3201 - 3300
IRV/C/1/34 Advice Note 3301 - 3400
IRV/C/1/35 Advice Note 3401 - 3500
IRV/C/1/36 Advice Note 3501 - 3600
IRV/C/1/37 Advice Note 3601 - 3700
IRV/C/1/38 Advice Note 3701 - 3800
IRV/C/1/39 Advice Note 3801 - 3900
IRV/C/1/40 Advice Note 3901 - 4000
IRV/C/1/41 Advice Note 4001 - 4100
IRV/C/1/42 Advice Note 4101 - 4200
IRV/C/1/43 Advice Note 4201 - 4300
IRV/C/1/44 Advice Note 4501 - 4600
IRV/C/2 Order Books
IRV/C/2/01 Order Book 2001 - 2100
IRV/C/2/02 Order Book 2101 - 2200
IRV/C/2/03 Order Book 2201 - 2300
IRV/C/2/04 Order Book 2301 - 2400
IRV/C/2/05 Order Book 2401 - 2500
IRV/C/2/06 Order Book 2501 - 2600
IRV/C/2/07 Order Book 2601 - 2700
IRV/C/2/08 Order Book 2701 - 2800
IRV/C/2/09 Order Book 2801 - 2900
IRV/C/2/10 Order Book 2901 - 3000
IRV/C/2/11 Order Book 3001 - 3100
IRV/C/2/12 Order Book 3101 - 3200
IRV/C/2/13 Order Book 3201 - 3300
IRV/C/2/14 Order Book 3301 - 3400
IRV/C/2/15 Order Book 3401 - 3500
IRV/C/2/16 Order Book 3501 - 3600
IRV/C/2/17 Order Book 3601 - 3700
IRV/C/2/18 Order Book 3701 - 3800
IRV/C/2/19 Order Book 3801 - 3900
IRV/C/2/20 Order Book 3901 - 4000
IRV/C/2/21 Order Book 4001 - 4090
IRV/C/2/22 Order Book 5096 - 5500
IRV/C/3 Challenge receipt books
IRV/C/3/01 Challenge Receipt Book A1
IRV/C/3/02 Challenge Receipt Book A
IRV/C/3/03 Challenge Receipt Book B
IRV/C/3/04 Challenge Receipt Book C
IRV/C/3/05 Challenge Receipt Book D
IRV/C/3/06 Challenge Receipt Book G
IRV/C/3/07 Challenge Receipt Book F
IRV/C/3/08 Challenge Receipt Book I
IRV/C/3/09 Challenge Receipt Book J
IRV/C/3/10 Challenge Receipt Book L
IRV/C/3/11 Challenge Receipt Book M
IRV/C/3/12 Challenge Receipt Book R
IRV/C/3/13 Challenge Receipt Book T
IRV/C/3/14 Challenge Receipt Book U
IRV/C/3/15 Challenge Receipt Book V
IRV/C/3/16 Challenge Receipt Book W
IRV/C/3/17 Challenge Receipt Book Y
IRV/C/3/18 Challenge Receipt Book Z
IRV/C/3/19 Challenge Receipt Book 1 -100
IRV/C/3/20 Challenge Receipt Book 1 - 100
IRV/C/3/21 Challenge Receipt Book 1 - 100
IRV/C/3/22 Challenge Receipt Book 1 - 100
IRV/C/3/23 Challenge Receipt Book 1 - 88
IRV/C/4 Financial Records
IRV/C/4/01 Petty Cash Book
IRV/C/4/02 Petty Cash Book
IRV/C/4/03 Analysis Cash Book
IRV/C/4/04 Parcel Post Receipt Book
IRV/C/4/05 Parcel Post Receipt Book
IRV/C/4/06 Parcel Post Receipt Book
IRV/C/4/07 St Paul's Cash Receipt Book.
IRV/C/4/08 Diary
IRV/C/4/09 Barclays Bank Counter Credit Receipts Book
IRV/C/4/10 Barclays Bank Counter Credit Receipts Book
IRV/C/4/11 Barclays Bank Counter Credit Receipts Book
IRV/C/4/12 Barclays Bank Counter Credit Receipts Book
IRV/C/4/13 Barclays Bank Counter Credit Receipts Book
IRV/C/4/14 Challenge duplicate invoice book.
IRV/C/4/15 Challenge duplicate book.
IRV/C/4/16 Balance sheet
IRV/C/4/17 Balance sheet
IRV/C/4/18 Balance sheet
IRV/C/4/19 Barclays Account Sheet.
IRV/C/4/20 Letter
IRV/C/4/21 Invoices.
IRV/D Design drawings
IRV/D/1 Drawings of geared motor unit
IRV/D/1/01 Outline of geared motor unit type 47506PBD/W56. Fractional HP Motors Ltd., Enfield. Size 330 x 750mm.
IRV/D/1/02 Hand drawn pencil sketch of two 'C' section brackets. Draw for Mr. D.K. Northrop, Cheam-Sutton. Size 400 x 500mm.
IRV/D/1/03 Hand drawn pencil sketch of extension tube. Draw for Mr. D.K. Northrop, Cheam-Sutton. Size 200 x 330mm.
IRV/D/1/04 Hand drawn ink sketch of sprocket wheel for Mr. D.K. Northrop. Size 200 x 250 mm.
IRV/D/1/05 Two hand drawn ink sketches of a bracket, draw for Norman Fisher. Size 200 x 250 mm.
IRV/D/1/06 Hand drawn pencil sketch of spacer, eyepiece cell and lock ring. Size 130 x 200mm.
IRV/D/1/07 Monochrome photograph of a roadway and distant valley, object marked with a cross. Size 200 x 250 mm.
IRV/D/1/08 Monochrome photograph of the front of The Punch Bowl, Hotel. Possibly a telephoto photograph from the previous photograph location. Size 200 x 250 mm.
IRV/D/1/09 Monochrome photograph of a large telescope mounted on a stand inside a domed roof. Size 120 x 170 mm.
IRV/D/2 Drawings of high temperature thermometer bath
IRV/D/2/01 Drawing No. 1592
IRV/D/2/02 Drawing.
IRV/D/2/03 Drawing.
IRV/D/2/04 Drawing.
IRV/D/2/05 Drawing.
IRV/D/2/06 Drawing. No. E/9572/1.
IRV/D/2/07 Drawing.
IRV/D/2/08 Drawing.
IRV/D/2/09 Drawing. No. 258/34.
IRV/D/3 Drawings and other papers relating to telescopes
IRV/D/3/01 Drawing.
IRV/D/3/02 Drawing.
IRV/D/3/03 Drawing.
IRV/D/3/04 Drawing.
IRV/D/3/05 Drawing.
IRV/D/3/06 Drawing.
IRV/D/3/07 Drawing.
IRV/D/3/08 Drawing.
IRV/D/3/09 Drawing.
IRV/D/3/10 Drawing.
IRV/D/3/11 Drawing.
IRV/D/3/12 Trade Literature.
IRV/D/3/13 Trade Literature.
IRV/D/3/14 Trade Literature.
IRV/D/3/15 Trade Literature.
IRV/D/3/16 Drawing.
IRV/D/3/17 Drawing.
IRV/D/3/18 Letter.
IRV/D/3/19 Letter.
IRV/D/3/20 Letter.
IRV/D/3/21 Letter.
IRV/D/3/22 Letter.
IRV/D/3/23 Letter.
IRV/D/3/24 Letter.
IRV/D/3/25 Letter.
IRV/D/3/26 Postcard
IRV/D/3/27 Order form
IRV/D/3/28 Envelope
IRV/D/3/29 Stickers
IRV/D/3/30 Letter.
IRV/D/3/31 Contents sheet.
IRV/D/3/32 Cartoon sheet.
IRV/D/3/33 Sheet
IRV/D/4 Drawings
IRV/D/4/01 Drawing No. 1592
IRV/D/4/02 Drawing No. D781.
IRV/D/4/03 Drawing No. B 3083.
IRV/D/4/04 Drawing No. B 3083.
IRV/D/4/05 Drawing No. B 3083.
IRV/D/4/06 Drawing.
IRV/D/4/07 Drawing.
IRV/D/4/08 Drawing No. W528-3Z
IRV/D/4/09 Drawing No. 258/34
IRV/D/4/10 Drawing No. 258/32
IRV/D/4/11 Drawing.
IRV/D/4/12 Drawing No. 100-3110
IRV/D/4/13 Drawing No. 100-3111
IRV/D/4/14 Drawing No. 0/6135/2.
IRV/D/4/15 Drawing No. 100-3109
IRV/D/4/16 Drawing No. 100-3110
IRV/D/4/17 Drawing No. 100-3108
IRV/D/4/18 Drawing No. 100-3111
IRV/D/4/19 Drawing.
IRV/D/4/20 Drawing No. 258/33
IRV/D/4/21 Drawing No. 258/34
IRV/D/4/22 Drawing.
IRV/D/4/23 Drawing.
IRV/D/4/24 Letter
IRV/D/4/25 Drawing.
IRV/D/4/26 Letter
IRV/D/4/27 Letter
IRV/D/4/28 Invoice
IRV/D/4/29 Letter
IRV/D/4/30 Letter
IRV/D/4/31 Drawing.
IRV/D/4/32 Letter
IRV/D/4/33 Letter
IRV/D/4/34 Drawing.
IRV/E Photographs
IRV/F Promotional literature
IRV/F/1 H.N. Irving & Son promotional literature
IRV/F/2 Promotional literature of other manufacturers
IRV/G Certificates
IRV/J Ephemera
