Henry Fox Talbot, 1839, Tiger. Wood Engraving by Thomas Bewick (1753-1828), Paper negative, waxed, 7.3 x 8.9 cm, National Gallery of Canada / Musée des beaux-arts du Canada, Courtesy of the National Gallery of Canada (no. 33525), Purchased 1973, LL/6722

Henry Fox Talbot, 1841, Bust of Patroclus, Paper negative, waxed, 12.7 x 8.6 cm, National Gallery of Canada / Musée des beaux-arts du Canada, Courtesy of the National Gallery of Canada (no. 33533), Purchased 1973, LL/6719

Alphonse de Brebisson, 1849 (ca), Father and son in doorway, Potassium fixed paper negative, 6-11/16 x 4-7/8 in (170 x 125 mm), Charles Isaacs Photographs, Inc, Courtesy of Charles Isaacs (N1325j), LL/11507

Alphonse de Brebisson, 1849 (ca), Five Women Visiting by a Window, Potassium fixed paper negative, 6-1/2 x 5 in (165 x 127 mm), Charles Isaacs Photographs, Inc, Courtesy of Charles Isaacs (N1338j), LL/11508

Charles Nègre, 1852, Beaucaire, Paper negative, waxed, 32.3 x 22.7 cm, National Gallery of Canada / Musée des beaux-arts du Canada, Courtesy of the National Gallery of Canada (no. 32521), Purchased 1973, LL/6718

Charles Nègre, 1850-1854, View of Louis-Philippe Bridge and Saint-Gervais Church, Paris, Dry waxed paper negative, Universiteit Leiden, Prentenkabinet, Copyright © Prentenkabinet Universiteit Leiden (61.932), LL/25794

Charles Nègre, 1850-1854, View of the south-side apsis and the new sacristy of the Notre-Dame, Paris., Dry waxed paper negative, Universiteit Leiden, Prentenkabinet, Copyright © Prentenkabinet Universiteit Leiden (61.933), LL/25795

Charles Nègre, 1849 (ca), Hand study, Waxed paper negative, The Hyman Collection, LL/54703

W. & F. Langenheim, 1849, Frederick Langenheim (1809-1879), Calotype negative, 7 5/8 x 5 7/8 ins, Cornell University Library, On loan from the Stephan and Beth Loewentheil Family Photographic Collection., LL/44745

Édouard Baldus, 1852 (ca), Place de la Concorde, Paris, Waxed paper negative, The Hyman Collection, LL/54695

Fortune-Joseph Petiot-Groffier, 1850s (ca), Brick buildings, Chalon Sur Soane, Paper negative, 10 x 13 1/2 in, Lee Gallery, Courtesy of Lee Gallery (Z1202), LL/13230

Fortune-Joseph Petiot-Groffier, 1850s (ca), River Scene, Chalon Sur Soane, Paper negative, 10 3/4 x 13 1/2 in, Lee Gallery, Courtesy of Lee Gallery (Z1203), LL/13231

Fortune-Joseph Petiot-Groffier, 1850s (ca), Brick Buildings, Chalon Sur Soane, Paper negative, 10 1/2 x 14 in, Lee Gallery, Courtesy of Lee Gallery (Z1204), LL/13232

Louis-Rémy Robert, 1852 (ca), Doorway to Sèvres Factory, Waxed paper negative, 32.70 x 26.20 cm (12 13/16 x 10 5/16 ins) (image), Cleveland Museum of Art, Norman O. Stone and Ella A. Stone Memorial Fund, Accession No.: 1991.37, LL/40869

William Crookes, 1850s, Claudet's Focimeter, Paper negative, 8.7 x 6.2 cm, Harry Ransom Humanities Research Center at the University of Texas at Austin, HRC, LL/6136

Comte Frédéric Flachéron, 1853, The Tiber, Rome (Le Tibre à Rome), Paper negative, 24.5 x 33.6 cm, Artcurial, courtesy of Artcurial (Sale 1170, Lot 17), LL/19505

Thomas Keith, 1856 (ca), Trees, Paper negative, 26.9 x 28.8 cm, Harry Ransom Humanities Research Center at the University of Texas at Austin, HRC, LL/6120

Alfred Capel Cure, 1852, 1 February, My Beasts, Paper negative, 7 3/4 x 6 1/4 in (19.7 x 15.9 cm), Metropolitan Museum of Art, The Museum of Modern Art, New York. Gift of Paul F. Walter, 1986, LL/25991

Patrick Gerald Fitzgerald, 1858, January, No. 3. Alambagh House near Lucknow, Waxed paper negative, 170 x 240 mm, Bonhams - London, Courtesy Bonhams, London (April 9, 2008, #240), LL/28269

Ferdinand Tillard, 1855 (ca), Portrait of Syrna Duhamel (?), Waxed paper negative, 12 11/16 x 11 1/8, Charles Isaacs Photographs, Inc, LL/4214

John Murray, 1857 (before), View of the photographer's house by John Murray, Waxed paper negative, Bonhams - London, Courtesy Bonhams, London (April 9, 2008, #44), LL/28250

John Murray, 1857 (ca), Agra, Zenana, or Ladies' Apartment in the Palace of Shah Jahan, Waxed paper negative, 360 x 450mm, Bonhams - London, Courtesy Bonhams, London (April 9, 2008, #49), LL/28252

John Murray, 1858-1862 (ca), Agra, the courtyard of the Pearl Mosque in the Fort, Waxed paper negative, 380 x 480 mm, Bonhams - London, Courtesy Bonhams, London (April 9, 2008, #74), LL/28255

John Murray, 1858-1862 (ca), Agra, Taj Mosque, Waxed paper negative, Bonhams - London, Courtesy Bonhams, London (April 9, 2008, #61), LL/28254

John Murray, 1858-1862 (ca), Agra, Distant view of the Taj Mahal from the Fort, Waxed paper negative, 255 x 350 mm, Bonhams - London, Courtesy Bonhams, London (April 9, 2008, #56), LL/28253

John Murray, 1858-1862 (ca), Agra, View of the Taj Mahal from the bank of the Jumna, Waxed paper negative, 280 x 360 mm, Bonhams - London, Courtesy Bonhams, London (April 9, 2008, #82), LL/28256

John Murray, 1858, Suttee Ghat Cawnpore ["Suttee Ghat Cawnpore," Scene of the Mutiny Massacre, Kanpur, India], Paper negative, 38 x 48 cm (14 15/16 x 18 7/8 ins), Metropolitan Museum of Art, Gilman Collection, Purchase, Cynthia Hazen Polsky Gift, 2005, Accession Number: 2005.100.946, LL/40434

Linnaeus Tripe, 1857, December - 1858, January, Beekinpully: Permaul's Swing at Mariammah Covil, Waxed paper negative, National Science and Media Museum, The Royal Photographic Society Collection, LL/59094

Linnaeus Tripe, 1854, December, Hullabede: Suli Munduppum from the Northeast, Waxed paper negative, 10 13/16 x 14 ins (27.4 x 35.6 cm), National Science and Media Museum, The Royal Photographic Society Collection, LL/59096

Enrico Van Lint, 1853, 6 July, Pisa, the Lungarni taken from the right bank of the Arno looking to the Ponte a Mare, Calotype, 12 x 16 cms, Private collection - Estate of Van Lint, Courtesy of the heirs of Enrico Van Lint, LL/44257

Enrico Van Lint, 1853, 26 October, Pisa, Campo Santo interior, Calotype, 18.2 x 24.1 cms, Private collection - Estate of Van Lint, Courtesy of the heirs of Enrico Van Lint, LL/44258

Benjamin Brecknell Turner, 1852, Crystal Palace, Hyde Park, Transept, Paper negative, 30.2 x 40.1 cm (11 7/8 x 15 13/16 ins), Metropolitan Museum of Art, Gilman Collection, Purchase, The Horace W. Goldsmith Foundation Gift, through Joyce and Robert Menschel, 2005, Accession Number: 2005.100.259, LL/40465

George Bridges, 1848, Temple of Wingless Victory, Lately Restored, Paper negative, 16.7 x 20.6 cm (6 9/16 x 8 1/8 ins), Metropolitan Museum of Art, Gilman Collection, Purchase, William Talbott Hillman Foundation Gift, 2005, Accession Number: 2005.100.55, LL/40447

Unidentified photographer, 1850s, Spreading Oak with Seated Figure, Paper negative, 7 x 8 1/8 in (17.7 x 20.7 cm), Metropolitan Museum of Art, Gift of Hans P. Kraus, Jr., 2007, LL/25979

Unidentified calotypist (French), 1858 (ca), The Cabin in the Woods, No Place, Waxed paper negative, 17.8 x 23.6 cm, The Romantic Agony Book & Print Auctions, Auction 19 June 2015, Lot: 41, LL/60166