Louis Jacques Mandé Daguerre, n.d., Portrait of Louis Jacques Mandé Daguerre, Photograph, hand-coloured, Archives of Modern Conflict OR National Gallery of Canada, LL/9682

Louis Jacques Mandé Daguerre, 1880s (ca), American cigarette card from the Lone Jack Cigarette Co, Lynchburg, VA, USA, Cigarette card, Archives of Modern Conflict OR National Gallery of Canada, LL/9675

Charles Richard Meade, 1848 (original Daguerreotype) 1860s (ca), Daguerre [Louis Jacques Mandé Daguerre], Cabinet card, Private collection of Noel Chanan, LL/33039

Louis Jacques Mandé Daguerre, n.d., Daguerre, Lithograph, Archives of Modern Conflict OR National Gallery of Canada, LL/9696

Louis Jacques Mandé Daguerre, n.d., Daguerre [Detail from lithograph], Lithograph, Archives of Modern Conflict OR National Gallery of Canada, LL/9697

Antoine Claudet, 1852, M. Arago, Wood engraving, Private collection of Noel Chanan, LL/33038

John Moffat, n.d., Henry Fox Talbot, Carte de visite, National Gallery of Canada / Musée des beaux-arts du Canada, © By kind permission of the Talbot Trust and the National Trust Fox Talbot Museum, Lacock, United Kingdom, LL/6723

Henry Fox Talbot, 1842, Portrait of Talbot's assistant Nicolaas Henneman, Calotype negative, Rijksmuseum, Copyright © Rijksmuseum Amsterdam (RP-F-AA3369), LL/25761

Sarony, n.d., Samuel Morse, Carte de visite, Jeffrey Kraus Antique Photographics, Courtesy of Jeffrey Kraus, LL/6246

Mathew Brady's Studio, 1845 (ca), [Samuel F. B. Morse, head-and-shoulders portrait, facing right]., Daguerreotype, 1/6 plate, Library of Congress, Prints and Photographs Division, DAG no. 1278 / cph 3g12153, LL/6519

Unidentified photographer / artist, n.d., Prof. Morse, Carte de visite, Archives of Modern Conflict OR National Gallery of Canada, LL/9808

Jeremiah Gurney, n.d., Professor Morse, Stereocard, Jefferson Stereoptics, Courtesy of John Saddy (Auction, Oct 15, 2008 # 8-03, Lot 106), LL/31436

Jeremiah Gurney, n.d., Professor Morse, Stereocard, detail, Jefferson Stereoptics, Courtesy of John Saddy (Auction, Oct 15, 2008 # 8-03, Lot 106), LL/31437

Hippolyte Bayard, 1840, Self-Portrait as a Drowned Man, Direct positive on paper, Société Française de Photographie, LL/5538

John Moffat, 1864 (?), Sir David Brewster, Carte de visite, Private collection of Noel Chanan, LL/33040

Maull & Polyblank, 1850s (late), Peter Mark Roget, Albumen print, Private collection of Noel Chanan, LL/33041

André Adolphe-Eugène Disdéri, 1860, Disdéri, Carte de visite, Paul Frecker, LL/13480

André Adolphe-Eugène Disdéri, 1858-1862, Disdéri self-portrait, Carte de visite, Paul Frecker, LL/13382

André Adolphe-Eugène Disdéri, 1858-1862, Disdéri self-portrait, Carte de visite, Paul Frecker, LL/13381

André Adolphe-Eugène Disdéri, 1860-1870, Disdéri, Carte de visite, Archives of Modern Conflict OR National Gallery of Canada, LL/10619

Honoré Daumier, 1862, 25 May, Nadar Elevating Photography to the Hieght of Art [Nadar elevant la Photographie a la hauteur de l'Art], Lithograph, George Eastman Museum, Courtesy of George Eastman House, Gift of Eastman Kodak Company: ex-collection Gabriel Cromer (GEH NEG: 20032), LL/6893

Unidentified photographer, n.d., Nadar, Photograph, 14.2 x 9.5 cm, Source requested, LL/6572

Nadar, n.d., Nadar, Carte de visite, Archives of Modern Conflict OR National Gallery of Canada, LL/9806

William Vick, 1881 (taken) 1950s (print), Eadweard Muybridge, Gelatin silver print, Carl Mautz Vintage Photographs, LL/25661

Antoine Claudet, 1850s (ca), Portrait of Michael Faraday, Carte de visite, Private collection of Noel Chanan, LL/32825

Unidentified photographer, 1850 (ca), Portrait of a scientist, Daguerreotype, 1/6 plate, Archives of Modern Conflict OR National Gallery of Canada, LL/11428

Unidentified photographer, 1847 (ca), Portrait of a scientist, Daguerreotype, 1/6 plate, Archives of Modern Conflict OR National Gallery of Canada, LL/11429

C. Laguiche, 1795 (ca), Joseph Nicéphore Niépce, Ink and watercolor, 18.5 cm in diameter, Harry Ransom Humanities Research Center at the University of Texas at Austin, HRC (964:0000:0001), LL/6129

Antoine Claudet, 1853, Self-Portrait with His Son Francis, Daguerreotype, stereo, two 1/6 plates, 2 11/16 x 2 1/4 in, J. Paul Getty Museum, The J. Paul Getty Trust (84.XT.266.10), LL/7497

Walery, n.d., Joseph Norman Lockyer F.R.S. (1836-1920), astronomer and solar physicist., Woodburytype, 9.8 x 7.1 in (248 mm x 182 mm), Paul Frecker, LL/12178

Unidentified photographer / artist, 1860s, J.A. Whipple, Carte de visite, albumen print, Private collection of Larry West, Courtesy of Larry J. West, © West Companies, Inc., 2005. [From the book: Tokens of Affection and Regard], LL/8599

Maull & Polyblank, n.d., Scottish Physicist, Sir David Brewster (1781-1868), inventor of the refracting stereoscope and the Kaleidoscope. He is also credited with inventing the first twin lens stereoscopic camera., Carte de visite, Stereographica - Antique Photographica, Courtesy of Bryan and Page Ginns (#20 / 174), LL/31522

N. Charmantray (Rouen), 1890s, A French scientist surrounded by bones, Albumen print, 6.9 x 8.8 in (177 mm x 223 mm), Paul Frecker, LL/12164

Unidentified photographer, n.d., Charles Darwin, Albumen print, Larry Gottheim, Be-hold, Inc, Courtesy of Larry Gottheim - Be-Hold (47 / 150), LL/11364

Unidentified photographer / artist, 1876-1883, Charles Darwin, [Men of Mark], Woodburytype, Dominic Winter Book Auctions, Auction Sale: Sept 3, 2008 - Lot: 102, LL/30078

Samuel Montague Fassett (S.M. Fassett, Artist, 122 & 124 Clark St., Chicago, Ill.), 1862, Robert Kennicott, Naturalist, Carte de visite, Wisconsin Historical Society, Increase Allen Lapham: Papers, 1825-1930, carte-de-visite collection, WHS Image id: WHi-47793, LL/32878

W.P. Egbert, 1865, Charles Christopher Parry, Botanist, Carte de visite, Wisconsin Historical Society, Increase Allen Lapham: Papers, 1825-1930, carte-de-visite collection, WHS Image id: WHi-46969, LL/32880

Unidentified photographer / artist, 1865, Professor Pierre Jean Edouard Desor, Geologist, Carte de visite, Wisconsin Historical Society, Increase Allen Lapham: Papers, 1825-1930, carte-de-visite collection, WHS Image id: WHi-45407, LL/32881

Henry Ulke, 1867, Spencer Fullerton Baird, Ornithologist and Ichthylogist, Carte de visite, Wisconsin Historical Society, Increase Allen Lapham: Papers, 1825-1930, carte-de-visite collection, WHS Image id: WHi-47666, LL/32882

Henry Ulke, 1868, Fielding B. Meek, Paleontologist, Carte de visite, Wisconsin Historical Society, Increase Allen Lapham: Papers, 1825-1930, carte-de-visite collection, WHS Image id: WHi-44756, LL/32883

D.W. Bowdoin, 1869, John Lewis Russell, Botanist, Carte de visite, Wisconsin Historical Society, Increase Allen Lapham: Papers, 1825-1930, carte-de-visite collection, WHS Image id: WHi-47098, LL/32884

Elliott & Fry, 1869 (ca), Sir Charles Lyell, Geologist, Carte de visite, Wisconsin Historical Society, Increase Allen Lapham: Papers, 1825-1930, carte-de-visite collection, WHS Image id: WHi-45315, LL/32885

Elliott & Fry, 1874 (ca), Thomas H. Huxley, Biologist, Carte de visite, Wisconsin Historical Society, Increase Allen Lapham: Papers, 1825-1930, carte-de-visite collection, WHS Image id: WHi-45423, LL/32886

Unidentified photographer / artist, 1902 (ca), The Late Major J.W. Powell, Carte de visite, Wisconsin Historical Society, Increase Allen Lapham: Papers, 1825-1930, carte-de-visite collection, WHS Image id: WHi-47856, LL/32887

A. Sonrel (46 School Street, Boston), 1864 (ca), Jean Louis Rodolphe Agassiz, Geologist, Carte de visite, Wisconsin Historical Society, Increase Allen Lapham: Papers, 1825-1930, carte-de-visite collection, WHS Image id: WHi-44730, LL/32879

H.S. Brown, 1860s (ca), Portrait of Agassiz and Agassiz, Carte de visite, Wisconsin Historical Society, Increase Allen Lapham: Papers, 1825-1930, carte-de-visite collection, WHS Image id: WHi-47318, LL/32888

Gabriel Lippmann, n.d., Autoportrait, Color glass plate (Lippmann process), Musée de l'Elysée, © Gabriel Lippmann, LL/7916

Lumière Brothers, 1935, 9 November, M. Louis Lumiere in 1907: photograph taken at the time he developed the Autochrome process, [L'Illustration (No 4836, 93rd year), p.301], Magazine page, printed reproduction from an Autochrome glass plate - plaques Autochrome, Private collection of Nadia Valla, © L'Illustration, LL/13541

France Lumière, 1907, The Lumière brothers crocheting, Autochrome, 13 x 18 cm, Private collection - Scheibli, © Collection Scheibli, LL/8892

Fred Church, 1890, February, George Eastman on board S.S. Gallia, Albumen print, Kodak #2 snapshot, 9.1 cm (diameter), George Eastman Museum, Courtesy of George Eastman House, Gift of Margaret Weston (GEH NEG:5253), LL/6901

Hermann Krone, 1865, Portraits of scientists from Dresden, Museum Ludwig, LL/7713

Unidentified photographer / artist, 1932, 1 January, Dr. Robert Goddard, NASA, NASA Center: Goddard Space Flight Center, Image: G-32-04, LL/37700

Yousuf Karsh, 1950, Albert Einstein, Gelatin silver print, 8 x 10, Peter Fetterman Gallery, Courtesy of the estate of Yousuf Karsh, LL/505

Ruth Orkin, n.d., Einstein, Gelatin silver print, 16 x 20 in, Fay Gold Gallery, LL/5349

Unidentified photographer, 1880 (ca), Chemist, Albumen print, Private collection of Steven Evans, Courtesy of Stephen Evans Vintage Photography (www.se-photo.com, #500), LL/9476