Anne Brigman, 1923, Elegie, Gelatin silver print, 9 5/8 x 7 3/4 in, Lee Gallery, Image courtesy of the Lee Gallery (www.leegallery.com), LL/3170

André Kertész, 1923, Tree study against a riveted metal tank, Hungary, Gelatin silver print, 2 3/4 x 1 1/2 ins (5.7 x 3.8 cm), Swann Galleries - New York, Fine Photographers, 19 February 2015, Sale 2374, Lot 26, LL/57655

Brett Weston, 1974, Tree Trunks, Mexico, Silver print, 9 1/4 x 7 1/2 ins (23.5 x 19.1 cm), Swann Galleries - New York, Courtesy of Swann Galleries (Auction, "Important Photograms & Photobooks", Dec 9, 2010, #2233, Lot 144), LL/42108

Albert Renger-Patzsch, 1929, Eifellandschaft, Gelatin silver print, 23 x 17.1 cm, Sotheby's - Paris, Courtesy of Sotheby's Paris (Photographs, Fri, 20 Nov 09, 4:00 PM, PF9027, Lot 36), LL/33724

Max Baur, 1930s (taken) 1950s (print), Untitled [Parc Sassouci], Gelatin silver print, ferrotyped, 17 x 23.3 cm (17.3 x 23.6 cm), Lempertz - Cologne, Auction 1021, November 26, 2013, Lot: 59, LL/52092

Minor White, 1951, Cypress Grove Trail, Point Lobos, California, Gelatin silver print, 23.7 x 16.5 cm, Princeton University Art Museum, The Minor White Archive, bequest of Minor White (MWA 51-61), LL/7278

Michael Kenna, 2002, Tree and Mountain, Suizenji Joju-en Garden, Japan, Catherine Edelman Gallery, LL/3902

Arnold Newman, 1941, Tree and Wall, Philadelphia, Gelatin silver print, 14,5 x 15,4 cm (23 x 17,9 cm) (5 ¾ x 6 ? ins (9 x 7 ins)), Villa Grisebach Auktionen GmbH - Berlin, Auction 230, 26 November 2014, Photographs, Lot: 2125, LL/55989

Alfred Stieglitz, 1927 (ca), Life and Death, Gelatin silver print, 9.25 x 6.1, Andrew Smith Gallery, LL/2325

Ansel Adams, 1948, Aspen, North Rim, Grand Canyon National Park, Arizona, Gelatin silver print, 9.3 x 7, Galerie Zur Stockeregg, LL/4381

Frances Benjamin Johnston, 1926-1944, Wormsloe Plantation, Savannah vic., Chatham County, Georgia, Negative, safety film, 8 x 10 ins, Library of Congress, Prints and Photographs Division, Reproduction Number: LC-DIG-csas-00901 (digital file from original negative), LL/37089

Frances Benjamin Johnston, 1938, Middleton Place, Ashley River vic., Dorchester County, South Carolina, Negative, safety film, 8 x 10 ins, Library of Congress, Prints and Photographs Division, Reproduction Number: LC-DIG-csas-03856 (digital file from original negative), LL/37095

Michael Kenna, 2003, Autumn Leaves, Unpenji, Shikoku, Japan, Gelatin silver print, 7 x 7, HackelBury Fine Art Ltd, LL/1606

Wynn Bullock, 1956, The Forest, Silver print, 9 1/2 x 7 1/2 in (24.1 x 19.1 cm), Swann Galleries - New York, Courtesy of Swann Galleries (Auction Oct 21, 2008, Lot 244), LL/31280

August Sander, n.d., Am Stadtwaldweiher (Pond in the City Park), Gelatin silver print, 29.3 x 23 cm (11 9/16 x 9 1/16 ins), Museum of Fine Arts, Boston, Gift of David Bakalar, Accession number: 1976.728, August Sander Archiv, Köln; VG-Bild Kunst, Bonn, 2011, LL/46587

Russell Lee, 1937, June, New growth of pine forest in Black River Falls project, Wisconsin., Gelatin silver print, 8 x 10 ins (20.3 x 25.4 cm), NYPL - New York Public Library, Farm Security Administration Collection, Catalog Call Number: 030532-A, Digital ID: 3969623, Record ID: 2034784, LL/48454

Edward Weston, 1938, Untitled (Barn), Gelatin silver print, h: 7.5 x w: 9.5 in / h: 19 x w: 24.1 cm (image) Mounted on board (14 x 17 in), Etherton Gallery, LL/22221

Édouard Boubat, 1950, L'arbre et la poule, Gelatin silver print, Galerie Agathe Gaillard, LL/37758

Brett Weston, 1950s (early), Pine Forest, Yosemite, Gelatin silver print, J. Paul Getty Museum, © The Brett Weston Archive [Getty: 2000.77.226 - Gift of Christian K. Keesee], LL/5986

Albert Renger-Patzsch, 1929, Landschaft (Landscape in Germany), Gelatin silver print, Private collection of Jan Weijers (Servatius), LL/44126

Albert Renger-Patzsch, 1947, Schwarzkiefern im Park von Wilhelshohe, Gelatin silver print, 6 9/16 x 8 1/2 in, Zabriskie Gallery, Courtesy of the Zabriskie Gallery [ARP002294], LL/15816

Harry Callahan, 1949 (taken, later print), Eleanor, Chicago, Gelatin silver print, h: 7.6 x w: 9.6 in / h: 19.3 x w: 24.4 cm, Etherton Gallery, LL/22136

Harry Callahan, 1950, Chicago, Gelatin silver print, h: 12.2 x w: 9.6 in / h: 31 x w: 24.4 cm, Etherton Gallery, LL/22129

Michael Kenna, 2002, Three Trees, Muriyama, Honshu, Japan, Catherine Edelman Gallery, LL/3900

Albert Renger-Patzsch, 1961, Olive Trees, Apulia, Gelatin silver print, 163 x 220mm, Source requested, LL/6288

Albert Renger-Patzsch, 1930s (taken) 1940-1955 (print), Woodland Orchard in Winter, Gelatin silver print, 11x15 ins (27.9x38.1 cm), Swann Galleries - New York, Courtesy of Swann Galleries (Auction, Photographs and other Properties from the Estate of Filmmaker Gary Winick, April 04, 2012, Sale: 2274, Lot: 342), LL/47215

Otto Steinert, 1956, The Trees in front of my Window, Gelatin silver print, ferrotyped, 28.8 x 35.7 cm, Lempertz - Cologne, Auction 1021, November 26, 2013, Lot: 156, LL/52137

Albert Renger-Patzsch, 1960, Pappeln, Gelatin silver print, 16,5 x 22,6 cm, Bassenge Photography Auctions, (88 / 4307), LL/15771

Wynn Bullock, 1957, Florence, Trees and Sand Dunes, Gelatin silver print, 7 9/16 x 9 7/16 in (19.21 x 23.97 cm) (image), Minneapolis Institute of Art - MIA, Minneapolis Institute for the Arts, The Ethel Morrison Van Derlip Fund (76.50.2), LL/7290

John Sexton, 1980, Trees, Valley Fog, Dusk, Yosemite Vallery, California, Gelatin silver print, 10 x 13 1/2 in a 16 x 20 mat, Afterimage Gallery, LL/1439

Brett Weston, 1971, Sierra Lake, Gelatin silver print, 10 3/4 x 12 1/2 ins (27.3 x 31.8 cm), Swann Galleries - New York, Courtesy of Swann Galleries (Auction, Dec 13, 2011, #2265, Lot 277), LL/44969

Elliott Erwitt, 1975, Seagull and Crossed Trees, Florida, Gelatin silver print, 10 3/4 x 16 ins (27.3 x 40.6 cm), Swann Galleries - New York, Courtesy of Swann Galleries (Auction, Dec 13, 2011, #2265, Lot 310), LL/44972

Sally Mann, 2000, Untitled [Manassas #1], [Last Measure], Gelatin silver enlargement, made from 8 by 10 inch wet-plate collodion negative; dry-mounted, and coated with custom matte-surface varnish., 40 x 50 in, Edwynn Houk Gallery, LL/5150

Mark Osterman, 1998, The Orchard, [Ethereality: Memories of Places You've Never Been], Gelatin silver print, wet-plate collodion negative, 16 x 20 in, Tilt Gallery, LL/24604

Neil Folberg, 2003-2005, Cezanne: Rocher Rouge, Bibemus, [The French Impressionists], Color print, Provided by the artist - Neil Folberg, © Neil Folberg, courtesy of the artist, LL/18829

Lisa M. Robinson, 2005, Bound, [Snowbound], C-print, 28 x 36 in, Provided by the artist - Lisa M. Robinson, LL/29011

John Pfahl, 1977, February, Australian Pines, Fort Desoto Fla., Ektacolor, 8 x 10 in, Larry Gottheim, Be-hold, Inc, Courtesy of Larry Gottheim - Be-Hold (45 / 210), LL/7420

Jo Babcock, n.d., Joshua Tree, Pinhole camera, Provided by the artist - Jo Babcock, LL/32319

Sarah Hobbs, 2006, Sublimination, Chromogenic print, 48 x 60 ins, Provided by the artist - Sarah Hobbs, LL/47832

Jerry Spagnoli, 2004, Tree study (triptych), Daguerreotypes, full plates, (x3), 19 x 8 1/4 ins (48.3 x 21 cm), Swann Galleries - New York, Fine Photographers, 19 February 2015, Sale 2374, Lot 168, LL/57703