Alvin Langdon Coburn, 1910, The Williamsburg Bridge, Photogravure, 7 3/8 x 5 7/8, Barry Singer Gallery, LL/2794

Pierre Dubreuil, 1911, Avenue Corner, Oil print, 9.2 x 7.5, Galerie Zur Stockeregg, LL/4462

Pierre Dubreuil, 1920s (ca), Le Metronome, Silver print, 9 5/8 x 7 7/8, Lee Gallery, (S2088), LL/13374

Ralph Steiner, 1921, Typewriter Keys, Gelatin silver print, 8 1/16 x 6 in, Library of Congress, Prints and Photographs Division, Warren and Margot Coville Collection, Prints & Photographs Division, Library of Congress [LC-DIG-ppmsca-05985], LL/15520

Anton Bruehl, 1929 (ca), Top Hats (Weber and Heilbroner Advertisement), Library of Congress, Prints and Photographs Division, Warren and Margot Coville Collection, Prints & Photographs Division, Library of Congress, LL/15513

Wynn Richards, 1922, Abstraction (Sugar Cubes and Shadows), Library of Congress, Prints and Photographs Division, Warren and Margot Coville Collection, Prints & Photographs Division, Library of Congress, LL/15530

Paul Outerbridge, 1922, Still Life, Cheese and Crackers, Library of Congress, Prints and Photographs Division, Warren and Margot Coville Collection, Prints & Photographs Division, Library of Congress, LL/15524

Margaret Bourke-White, 1931, Organ Pipes, Library of Congress, Prints and Photographs Division, Warren and Margot Coville Collection, Prints & Photographs Division, Library of Congress, LL/15535

Bernard S. Horne, 1917 (ca), Design - Princeton, Gelatin silver print, 11 7/8 x 9 15/16 in, Library of Congress, Prints and Photographs Division, Warren and Margot Coville Collection, Prints & Photographs Division, Library of Congress [LC-USZC4-9781], LL/15556

Stella F. Simon, 1925 (ca), Violin, Platinum print, 8 x 6 1/16 in, Library of Congress, Prints and Photographs Division, Warren and Margot Coville Collection, Prints & Photographs Division, Library of Congress [LC-USZC4-9810], LL/15559

Paul Strand, 1915, New York, [Camera Work, no. 48, pl. 02], Photogravure, 5 x 6, Peter Fetterman Gallery, LL/559

Paul Strand, 1916, Abstraction, Twin Lakes, Connecticut, Silver-platinum print, 32.8 x 24.4 cm (12 15/16 x 9 5/8 in), Metropolitan Museum of Art, Ford Motor Company Collection, Gift of Ford Motor Company and John C. Waddell, 1987 (1987.1100.10), LL/6342

Paul Strand, 1916, Still Life with Pear and Bowls, Twin Lakes, Connecticut, Platinum print, 10 1/8 x 11 5/16, J. Paul Getty Museum, © Aperture Foundation, LL/5956

Paul Strand, 1923, The Lathe, Gelatin silver print, 9 3/4 x 7 1/2 ins, George Eastman Museum, Courtesy © Aperture Foundation, Inc., Paul Strand Archive, LL/33198

Edward Weston, 1925, Boats, San Francisco, Silver print, 7¢ x 9¢ in (19.1 x 24.1 cm), Swann Galleries - New York, LL/21787

Edward Weston, 1926, Nude, Gelatin silver print, 8 1/2 x 7 1/2 ins, Center for Creative Photography, Collection Center for Creative Photography © 1981 Arizona Board of Regents., LL/33218

Edward Weston, 1927, Shell, Silver print, 9 1/4 x 7 1/4 in, Dayton Art Institute, Courtesy of Dayton Art Institute, Gift of Mr. and Mrs. John W. Longstreth (2001.70), LL/6942

Edward Weston, 1930 (taken) 1970s (print), Artichoke Halved, Silver print, 7 1/4 x 9 1/4 in (18.4 x 23.5 cm), Swann Galleries - New York, Courtesy of Swann Galleries (Auction, May 22, 2007, #2115, Lot 268), LL/19253

Edward Weston, 1931, Cabbage Leaf, Oakland Museum of California, © Collection of the Oakland Museum of California. Gift of Concours D'Antiques, Art Guild, LL/16185

Brett Weston, 1929, Sewer Pipes, New York, Gelatin silver print, 9 3/8 x 7, Barry Singer Gallery, LL/3130

Johan Hagemeyer, 1927, Telephone Building, Gelatin silver print, 7 3/4 x 5 1/2, Silverstein Photography, LL/273

Johan Hagemeyer, n.d., San Francisco scene, Gelatin silver print, 6 x 4 1/2 in, Larry Gottheim, Be-hold, Inc, Courtesy of Larry Gottheim - Be-Hold (49 / 94), LL/18549

Albert Renger-Patzsch, 1920s, Industrial harbor view, Gelatin silver print, 22,5 x 16,5 cm, Bassenge Photography Auctions, (88 / 4306), LL/15770

Albert Renger-Patzsch, 1925-1926, Ilsender Foundry: Generators, Gelatin silver print, Source requested, LL/1950

Florence Henri, 1928, [Untitled], Kunst Museum Bonn, Kunst Museum Bonn, © Florence Henri, LL/7110

Florence Henri, 1930 (ca), Composition aux roues de charrette, Heliogravure, 11.5 x 16 cm, Bibliothèque Nationale de France, Département des Estampes et de la Photographie, Estampes et Photographie. Ad 1291 4o. Don de l'Etat, 1939. (c) Galleria Martini & Ronchetti, GÛnes, Italie. www.florencehenri.com, LL/7203

László Moholy-Nagy, 1925, View from Radio-Tower, Berlin, Gelatin silver print, 24.2 x 18.8 cm (9.5 x 7.425), Galerie Johannes Faber, LL/1767

László Moholy-Nagy, 1926 (ca), Head, Gelatin silver print, 14 9/16 x 10 5/8 (37 x 27 cm), MoMA - Museum of Modern Art, New York, Given anonymously. ® 2002 Artists Rights Society (ARS), New York/VG Bild-Kunst, Bonn, LL/1982

László Moholy-Nagy, 1930 (ca, taken) 1994 (print), Woman in a park, Gelatin silver print, 28 x 20 cm, Dominic Winter Book Auctions, Printed Books,& Maps, Vintage Photography (17 June 2009, Lot: 136), LL/32394

Alexander Rodchenko, 1926, Shukhov tower, Moscow House of Photography, LL/895

Alexander Rodchenko, 1927, A part of Moscow, Source requested, LL/1954

Alexander Rodchenko, 1928, Glass and Light [Moscow], Gelatin silver print, 29.5 x 23.3 cm (11.5 x 9 ), Galerie Johannes Faber, LL/1778

Alexander Rodchenko, 1935, Column of Sports Society "Dinamo", Moscow House of Photography, LL/896

E.O. Hoppé, 1928, Cranes, Cammell Laird Shipyards, Liverpool, Gelatin silver print, E.O. Hoppé Estate, © E.O. Hoppé / Curatorial Assistance, Inc., Ref: 17943-Q, LL/38934

E.O. Hoppé, 1928, Skeleton of Graf Zeppelin, Friedrichshafen, Gelatin silver print, E.O. Hoppé Estate, © E.O. Hoppé / Curatorial Assistance, Inc., Ref: 18014-H-I, LL/38936

Germaine Krull, 1925 (ca), Building Abstract (variant from Métal), Gelatin silver print, 8.2 x 5.5, Galerie Zur Stockeregg, LL/4488

Germaine Krull, 1929 (ca), Roues de vélo, Reproduction photomécanique, 23 x 17 cm (image), Bibliothèque Nationale de France, Département des Estampes et de la Photographie, Estampes et Photographie. Le-106 -4o. Dépôt légal éditeur, LL/7192

Germaine Krull, 1929, Quarry, Gelatin silver print, 6 1/4 x 7 7/8, Silverstein Photography, LL/277

Charles Sheeler, 1927, Criss-Crossed Conveyors, River Rouge Plant, Ford Motor Company, Gelatin silver print, 23.5 x 18.8 cm (9 1/4 x 7 3/8 in), Metropolitan Museum of Art, Ford Motor Company Collection, Gift of Ford Motor Company and John C. Waddell, 1987 (1987.1100.1)
 
© The Lane Collection, LL/6357

Charles Sheeler, 1918, Side of White Barn, Bucks County, Gelatin silver print, 8 x 10, Lee Gallery, LL/21310

Charles Sheeler, 1928 (ca), Upper Deck, Gelatin silver print, 25.3 x 20.2 cm (9 15/16 x 7 15/16 in), Metropolitan Museum of Art, Gilman Collection, Purchase, 2005 (2005.100.155), LL/7466

Charles Sheeler, 1939, Suspended Power, Silver print (after his painting), 5 1/2 x 4 1/4 in (14 x 10.8 cm), Swann Galleries - New York, Courtesy of Swann Galleries (Auction, Feb 7, 2008, #2135, Lot 138A), LL/27135

Unidentified photographer, 1940s, Foundry Stack, Gelatin silver print, 4.5 in (11.43 cm) x 3.5 in (8.89 cm), Robert Tat Gallery, Courtesy of Robert Tat Fine Photographs (www.roberttat.com - #1226), LL/8985

Harcourt Studio, 1930s, Woman with Shadows, Gelatin silver print, 9 in (22.86 cm) x 6.5 in (16.51 cm), Robert Tat Gallery, Courtesy of Robert Tat Fine Photographs (www.roberttat.com - #2421), LL/8993

Paul Wolff, 1926, Reisender mit zwei Koffern, 17.8 x 23.8 cm, Gallery argus fotokunst, LL/2283

Ruth Bernhard, 1930, Lifesavers, Gelatin silver print, 11 x 14 / 16 x 20, Peter Fetterman Gallery, LL/417

Ruth Bernhard, 1930, Straws, Gelatin silver print, 11 x 14 / 16 x 20, Peter Fetterman Gallery, LL/412

Lewis W. Hine, 1920, Power house mechanic working on steam pump, National Archives and Records Administration, Records of the Work Projects Administration (69-RH-4L-2) [VENDOR # 36], LL/6602

T. Lux Feininger, 1928-1929 (ca), Metalltanz, Gelatin silver print, 10.8 x 14.4 cm (4 1/4 x 5 5/8 in), J. Paul Getty Museum, Object number: 84.XM.127.24, © Estate of T. Lux Feininger, LL/50601