Wilson A. Bentley, 1890, Snowflake Study, Albumen print, Smithsonian Institution Archives, LL/36377

Charles Lewis Gazin, 1941, Photograph of Charles Lewis Gazin's field work and collecting in Wyoming, Field notes, Smithsonian Institution Archives, LL/49707

Edward Chapin, 1937, Page of field notes by Edward Chapin, with photograph of carton nest of Nasutitermes with pith helmet in Jamaica, Field notes, Smithsonian Institution Archives, LL/49703

Thomas Smillie, 1906 (ca), Nothura maculosa (Spotted Nothura) Skeleton, Cyanotype, Smithsonian Institution Archives, LL/32242

Thomas Smillie, 1890 (ca), Untitled [Portrait of a man wearing a helmet], Cyanotype, Smithsonian Institution Archives, LL/32248

Thomas Smillie, 1913 (ca), Installation View of Smithsonian Photography Exhibition, Cyanotype, Smithsonian Institution Archives, LL/32250

United States National Museum (creator), 1896, Section of Gallery with Collections on History of Photography, Lantern slide, Smithsonian Institution Archives, LL/84294

Thomas Smillie, 1899, Marshall Islands Navigation Chart, Cyanotype, Smithsonian Institution Archives, LL/102198

Alexander Gardner, 1865, 24 January, Castle Fire, Smithsonian Institution Building, Albumen print, retouched, Smithsonian Institution Archives, LL/49633

Charles Lewis Gazin, 1959, Someone (probably Charles Lewis Gazin) unearthing specimens. Man's hand shown using a tool in the desert to unearth specimens. Glass bottle and metal tool are depicted., Field notes, Smithsonian Institution Archives, LL/49706

Edgar Mearns, 1892-1894, [Edgar A.] Mearns with woman and child, probably wife Ella and son Louis, during the Mexican Boundary Survey, Field notes, Smithsonian Institution Archives, LL/49708

Thomas Smillie, 1888, Samuel F. B. Morse's Daguerreotype Equipment, Cyanotype, Smithsonian Institution Archives, LL/32249

Thomas Smillie, 1899, Marshall Islands Navigation Chart, Cyanotype, Smithsonian Institution Archives, LL/32243

Thomas Smillie, 1890 (ca), Untitled [Egyptian Scarab], Cyanotype, Smithsonian Institution Archives, LL/32241

Mathew B. Brady, 1862, 31 May, Thaddeus Lowe's Balloon Ascent, Photographic print, composite, Smithsonian Institution Archives, LL/53208

Unidentified photographer, 1880 (ca), Portrait of woman believed to be Bernie Gallaher, Photograph, Smithsonian Institution Archives, LL/102195

Thomas Smillie, 1890 (ca), Untitled [Firearm and associated tools], Cyanotype, Smithsonian Institution Archives, LL/32245

Thomas Smillie, 1890, Untitled, Cyanotype, Smithsonian Institution Archives, LL/45565

Thomas Smillie, 1913, Untitled [Installation view of an exhibition of photography], Cyanotype, Smithsonian Institution Archives, LL/32247

Thomas Smillie, 1890 (ca), Untitled [Decorative objects], Cyanotype, Smithsonian Institution Archives, LL/32244

Unidentified photographer, 1880s, Photographic Laboratory of the United States National Museum, Glass negative, Smithsonian Institution Archives, LL/97525

Thomas Smillie, 1899, Marshall Islands Navigation Chart, Cyanotype, Smithsonian Institution Archives, LL/102196

Thomas Smillie, 1899, Marshall Islands Navigation Chart, Cyanotype, Smithsonian Institution Archives, LL/102197

Edward Chapin, 1942, Page of field notes by Edward Chapin, with photographs, Colombia, Field notes, Smithsonian Institution Archives, LL/49704

Unidentified photographer, 1880, United States National Museum Photographer, Glass negative, Smithsonian Institution Archives, LL/97518

Unidentified photographer, 1909 (ca), Kermit Roosevelt Photographing a Damaliscus, Photograph, Smithsonian Institution Archives, LL/128410

Thomas Smillie, 1890 (ca), Untitled [Statuettes], Cyanotype, Smithsonian Institution Archives, LL/32246

Bohumil Shimek, 1914, 7. Near view of native vegetation on sand-steppe near Heidesheim, Germany, Field notes, Smithsonian Institution Archives, LL/49705

Unidentified photographer, 1880s, George Washington Relics, Glass negative, Smithsonian Institution Archives, LL/97509