| RefNo | Title | Source |
| DF/MIN/13/6 | Draft report to Trustees on the inadequacy of accommodation for the Department of Mineralogy by Lazarus Fletcher | |
| DF/MIN/15/8 | Letters and memoranda to Lazarus Fletcher, with draft replies | |
| DF/DIR/930/17 | Fletcher, L: application for directorship of the BMNH | |
| DF/MIN/20/9/33 | Fletcher, Lazarus: Crystal measurements notebook | |
| DF/MIN/15/14 | Letters and memoranda to Lazarus Fletcher, with draft replies | |
| DF/MIN/20/9/10 | Fletcher, Lazarus: Youndegin meteorite [Australia] notebook I | |
| DF/PUB/516/5/8 | An introduction to the study of minerals | |
| DF/MIN/20/9/30 | Fletcher, Lazarus: Crystal measurements notebook | |
| DF/MIN/18/8 | Staff and Organisation | |
| DF/MIN/20/9/22 | Fletcher, Lazarus: Zomba meteorite [Nyasaland] notebook III | |
| DF/MIN/20/9/6 | Fletcher, Lazarus: Correspondence register | |
| DF/MIN/20/9/18 | Fletcher, Lazarus: Makarewa meteorite [New Zealand] notebook III | |
| DF/ZOO/200/30/153 | Fletcher, Lazarus | |
| DF/MIN/20/9/32 | Fletcher, Lazarus: Crystal measurements notebook | |
| DF/MIN/20/9/21 | Fletcher, Lazarus: Zomba meteorite [Nyasaland] notebook II | |
| DF/PAL/100/45/297 | Fletcher, L. | |
| DF/MIN/1/2/9-14 | Barlow, W | |
| DF/MIN/15/7 | Letters and memoranda to Lazarus Fletcher, with draft replies | |
| DF/MIN/20/9/25 | Fletcher, Lazarus: Petrological notebook containing references and other notes | |
| DF/MIN/20/9/28 | Fletcher, Lazarus: A catalogue of rocks, arranged alphabetically | |
| DF/MIN/20/9/7 | Fletcher, Lazarus: 'Weights and balances' notebook | |
| DF/DIR/946/3/1 | Fletcher, Lazarus: copies of letters and obituaries | |
| DF/MIN/3/3/30 | Tucson meteorite, USA | |
| DF/MIN/10/1/33 | Notes on meteorites and a manuscript entitled 'Chondrites' by Lazarus Fletcher | |
| DF/PAL/100/27/23 | Fletcher, L. | |
| DF/MIN/20/9/36 | Fletcher, Lazarus: Green's coefficients of elasticity, 'copy of ms sent to NSM, 29 Oct 1886' | |
| DF/ZOO/200/28/101-102 | Fletcher, Lazarus | |
| DF/MIN/20/9/17 | Fletcher, Lazarus: Makarewa meteorite [New Zealand] notebook II | |
| DF/MIN/20/9/8 | Fletcher, Lazarus: 'Salts &c, Kilima-njaro felspar', chemical notebook | |
| DF/MIN/15/17 | Letters and memoranda to Lazarus Fletcher, with draft replies | |
| DF/MIN/1/2/4 | Barker, D W | |
| DF/MIN/15/6 | Letters and memoranda to Lazarus Fletcher, with draft replies | |
| DF/MIN/15/9 | Letters and memoranda to Lazarus Fletcher, with draft replies | |
| DF/MIN/20/9/3 | Fletcher, Lazarus: Correspondence register | |
| DF/MIN/20/9/26 | Fletcher, Lazarus: Clastic and other rocks notebook, alphabetically arranged | |
| DF/MIN/20/9/27 | Fletcher, Lazarus: Rock Section notebook | |
| DF/MIN/20/9/15 | Fletcher, Lazarus: Lutschaunig's Stone meteorite [Chile] notebook | |
| DF/ZOO/200/34/81-81a | Fletcher, Lazarus | |
| DF/MIN/20/9/31 | Fletcher, Lazarus: Crystal measurements notebook | |
| DF/MIN/20/9/20 | Fletcher, Lazarus: Zomba meteorite [Nyasaland] notebook I | |
| DF/MIN/20/9/37 | Fletcher, Lazarus: Newscuttings on synthetic rubies | |
| DF/MIN/20/9/16 | Fletcher, Lazarus: Makarewa meteorite [New Zealand] notebook I | |
| DF/MIN/20/9/5 | Fletcher, Lazarus: Correspondence register | |
| DF/MIN/20/9/4 | Fletcher, Lazarus: Correspondence register | |
| DF/MIN/20/9/19 | Fletcher, Lazarus: Baddeleyite meteorite notebook | |
| DF/MIN/20/9/29 | Fletcher, Lazarus: Crystal measurements notebook | |
| DF/MIN/15/19 | Letters and memoranda to Lazarus Fletcher, with draft replies | |
| DF/MIN/13/5 | Suggested alterations to the chemical laboratory by Lazarus Fletcher | |
| DF/MIN/19/3 | Note on how to use an optical goniometer by Lazarus Fletcher | |
| DF/MIN/20/9 | Fletcher, Lazarus (Keeper, then Director): Correspondence and Papers | |
| DF/MIN/1/2/212-213 | Benison, F H | |
| DF/MIN/20/9/38 | Fletcher, Lazarus: On lenses for the telescope of a goniometer | |
| DF/MIN/10/1/18 | Notes on meteorites not in the museum collection by Lazarus Fletcher | |
| DF/BOT/404/1/3/41 | Fletcher, Lazarus | |
| DF/ZOO/200/55/13 | Fletcher, Sir Lazarus, 1854-1921, knight (London) | |
| DF/ZOO/200/33/83 | Fletcher, Lazarus | |
| DF/MIN/12/19 | Notes on Werner's scale of colours by Lazarus Fletcher for a introduction to the study of minerals exhibit | |
| DF/MIN/15/10 | Letters and memoranda to Lazarus Fletcher, with draft replies | |
| DF/MIN/20/9/11 | Fletcher, Lazarus: Youndegin meteorite [Australia] notebook II | |
| DF/PAL/100/34/304 | Fletcher, L. | |
| DF/PAL/100/34/305 | Fletcher, L. | |
| DF/MIN/20/9/24 | Fletcher, Lazarus: Caratash [Turkey] and Wittekrantz [South Africa] meteorite notebook | |
| DF/MIN/20/9/13 | Fletcher, Lazarus: Nejed [Arabia], Youndegin [Australia] and Caperr [Patagonia] meteorite notebook | |
| DF/DIR/946/3/1/3 | Fletcher, Lazarus: copies of unidentified obituaries | |
| DF/MIN/10/1/11 | List of meteorites acquired and registered between 1837 and 1857, by Lazarus Fletcher | |
| DF/MIN/20/9/9 | Fletcher, Lazarus: 'Kilima-njaro felspar' [Tanganyika] chemical notebook | |
| DF/MIN/16/2 | Report to Trustees on the work of the Department by Lazarus Fletcher | |
| DF/MIN/20/9/2 | Fletcher, Lazarus: Official diary recording daily duties at the Museum | |
| DF/MIN/10/4/5 | Notes on the classification of minerals with special reference to silicates, by Lazarus Fletcher | |
| DF/PUB/516/6/1 | A guide to the exhibition galleries of the Departments of Mineralogy and Botany | |
| DF/MIN/10/1/19 | Letters to Lazarus Fletcher about his 'Introduction to the Study of Meteorites' | |
| DF/MIN/10/1/32 | List of amendments to Lazarus Fletcher's 'Introduction to the Study of Meteorites' by George Savigar | |
| DF/MIN/15/20 | Letters and memoranda to Lazarus Fletcher, with draft replies | |
| DF/MIN/20/9/40 | Fletcher, Lazarus: 'Historical notes chiefly relative to the arrangement of the minerals, extracted from the archives' | |
| DF/PAL/100/34/52 | Anglo-Continental Guano Works | |
| DF/MIN/15/16 | Letters and memoranda to Lazarus Fletcher, with draft replies | |
| DF/MIN/20/9/1 | Fletcher, Lazarus: Official diary recording daily duties at the Museum | |
| DF/PAL/100/32/333 | Fletcher, L. | |
| DF/MIN/20/9/41 | Fletcher, Lazarus: On the history of the collections of minerals, rocks and meteorites, draft text for publication in The History of the Collections (1904) | |
| DF/PAL/100/43/85 | Fletcher, L. | |
| DF/PAL/100/49/350 | Fletcher, L. | |
| DF/MIN/1/1/181-183 | Armstrong, Professor Henry E | |
| DF/ZOO/200/17/159-159a | Fletcher, Lazarus | |
| DF/ZOO/200/33/85 | Fletcher, Lazarus | |
| DF/ZOO/200/44/137 | Fletcher, [Lazarus] | |
| DF/ZOO/235/1/1/9/75 | Fletcher, Lazarus | |
| DF/ZOO/235/1/1/1/249 | Fletcher, Lazarus | |
| DF/ZOO/235/1/1/8/63 | Fletcher, Lazarus. | |
| DF/PAL/100/60/108 | Prain, D | |
| DF/PAL/100/63/129 | Fletcher, L | |
| DF/DIR/946/3/1/1 | Fletcher, Lazarus: copies of letters and obituaries | |
| DF/MIN/10/1/13 | Letters from museums and collectors to Lazarus Fletcher in response to his request for lists of meteorites | |
| DF/MIN/10/1/16 | List of meteorites in the Museum by Lazarus Fletcher | |
| DF/PAL/105/2/45 | Carboniferous fossils from Dr John Young, Glasgow, sent by Griffth of Harrow. In a letter from Lazarus Fletcher to Henry Woodward | |
| DF/MIN/20/9/14 | Fletcher, Lazarus: Irons of Atacama [Chile] meteorite notebook | |
| DF/MIN/9/16 | Report on rocks collected on the National Antarctic Expedition, by George T Prior, edited by Lazarus Fletcher | |
| DF/MIN/10/1/10 | Extracts from the general register of specimens relating to meteorites, up to 1885, by Lazarus Fletcher | |
| DF/DIR/939/3 | Letters from L Fletcher and others | |
| DF/MIN/10/1/14 | Letters from Sir Norman Lockyer to Lazarus Fletcher about meteorites, helium and other matters | |
| DF/MIN/9/14 | Report on field geology of the National Antarctic Expedition, by Hartley T Ferrar | |
| DF/MIN/10/3/2 | Notes on mineral localities by Lazarus Fletcher, George T Prior and Leonard J Spencer | |
| DF/DIR/946/3/1/2 | Fletcher, Lazarus: copies of letters and obituaries | |
| DF/MIN/10/4/13 | Papers on the arrangement of the collection by Lazarus Fletcher, Nevil Story-Maskelyne, Henry M Platnauer and William L H Locke | |
| DF/MIN/1/2/85-95 | Barraclough, G | |
| DF/MIN/1/2/98 | Bartlett, Edward John | |
| DF/MIN/1/2/214-215 | Benness, W A | |
| DF/MIN/1/2/194-198 | Bemrose, H A | |
| DF/MIN/1/2/216 | Bennett, C | |
| DF/MIN/1/2/193 | Bemer, A | |
| DF/MIN/1/2/204-206 | Bentley, E L | |
| DF/MIN/15/18 | Letters and memoranda to Lazarus Fletcher, with draft replies | |
| DF/MIN/20/36/39 | Memoranda from the Keeper, Lazarus Fletcher | |
| DF/MIN/10/3/15 | Notes on localities on specimen labels by Lazarus Fletcher | |
| DF/MIN/20/9/23 | Fletcher, Lazarus: Zomba meteorite [Nyasaland] notebook IV | |
| DF/PUB/516/5/11 | Guide to the collection of rocks | |
| DF/MIN/10/4/2 | Crystal measurements of bismuth and apatite by Lazarus Fletcher | |
| DF/MIN/18/3 | Staff matters and procedures | |
| DF/MIN/15/21 | Letters and memoranda to Lazarus Fletcher, with draft replies | |
| DF/MIN/15/15 | Letters and memoranda to Lazarus Fletcher, with draft replies | |
| DF/MIN/15/13 | Letters and memoranda to Lazarus Fletcher, with draft replies | |
| DF/MIN/15/22 | Letters and memoranda to Lazarus Fletcher, with draft replies | |
| DF/MIN/3/2/8 | Imilac meteorite, Chile | |
| DF/MIN/15/12 | Letters and memoranda to Lazarus Fletcher, with draft replies | |
| DF/MIN/15/11 | Letters and memoranda to Lazarus Fletcher, with draft replies | |
| DF/MIN/10/1/34 | 'Quaesita', a list of meteorite questions by Lazarus Fletcher | |
| DF/ZOO/200/23/121 | Fletcher, Lazarus | |
| DF/ZOO/200/20/143-145 | Fletcher, Lazarus | |
| DF/ZOO/200/19/84 | Fletcher, Lazarus | |
| DF/ZOO/200/21/147 | Fletcher, Lazarus | |
| DF/ZOO/200/45/136 | Fletcher, L | |
| DF/ZOO/200/24/91 | Fletcher, Lazarus | |
| DF/MIN/10/2/3 | The Greville collection of minerals: official letters and memoranda relating to its acquisition, with copies by Lazarus Fletcher | |
| DF/ZOO/200/29/109 | Fletcher, Lazarus | |
| DF/ZOO/200/52/412 | Fletcher, [Lazarus] | |
| DF/MIN/15/23 | Letters and memoranda to Lazarus Fletcher, with draft replies | |
| DF/PAL/100/51/254 | Fletcher, L. | |
| DF/PH/2/4/1 | Staff Group Photograph: Mineralogy Department | |
| DF/MIN/10/1/17 | List of meteorites in the collection in order of acquisition, by Lazarus Fletcher | |
| DF/PAL/105/45 | John Gray collection of Silurian fossils: correspondence | |
| DF/PUB/516/5/7 | An introduction to the study of rocks | |
| DF/MIN/1/2/96-97 | Barter, W & Co., Ltd. | |
| DF/MIN/1/2/133-136 | Bechuanaland Exploration Company | |
| DF/MIN/1/2/162-192 | Bement, C S | |
| DF/MIN/3/2/2 | Heredia, Costa Rica | |
| DF/MIN/4/16 | Copies of progress reports and memoranda relating to minerals addressed to the Trustees by Charles Konig, 1819 | |
| DF/MIN/10/1/42 | Fletcher, Lazarus: Crumlin Meteorite | |
| DF/MIN/10/3/4 | Copy of a report on the Charles Hatchett collection of minerals by Sir Joseph Banks, Charles F Greville and Philip Rashleigh, taken by Lazarus Fletcher | |
| DF/MIN/15/24 | Letters and memoranda to Lazarus Fletcher, with draft replies | |
| DF/MIN/15/25 | Letters and memoranda to Lazarus Fletcher, with draft replies | |
| DF/MIN/15/26 | Letters and memoranda to Lazarus Fletcher, with draft replies | |
| DF/MIN/15/27 | Letters and memoranda to Lazarus Fletcher, with draft replies | |
| DF/MIN/15/28 | Letters and memoranda to Lazarus Fletcher, with draft replies | |
| DF/MIN/15/29 | Letters and memoranda to Lazarus Fletcher, with draft replies | |
| DF/MIN/15/30 | Letters and memoranda to Lazarus Fletcher, with draft replies | |
| DF/MIN/18/11 | Lazarus Fletcher Portrait | |
| DF/MIN/20 | Mineralogy Scientific Staff: Correspondence and Papers | |
| DF/MIN/20/9/12 | Fletcher, Lazarus: Nejed [Arabia], Greenbrier County [USA] and Youndegin [Australia] meteorite notebook | |
| DF/MIN/20/9/34 | Fletcher, Lazarus: On the dilation of crystals on warming: a letter from E Blasius with notes and an offprint | |
| DF/MIN/20/9/35 | Fletcher, Lazarus: Notes on liquid crystals, artificial twinning of felspar, nephrite, and Norbet's ruling machine, taken from published sources | |
| DF/MIN/20/9/39 | Fletcher, Lazarus: The Paul Groth testimonial portrait appeal: correspondence, lists of subscribers, accounts and printed papers | |
| DF/MIN/20/9/42 | Fletcher, Lazarus: Copies of Charles Konig's letterbooks (1830-1835, 1839-1840) made by George Savigar for Fletcher, taken from the originals in the Palaeontology Manuscripts | |
| DF/PAL/100/43/84 | Fletcher, L. | |
| DF/PAL/100/45/296 | Fletcher, L. | |
| DF/DIR/939 | Papers and correspondence of the Assistant Secretary | |