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Undated
Fossil specimen of Glossina …
Unidentified photographer
[photographs, lantern slides
Undated
Fossil type specimen of Sapi …
Unidentified photographer
[photographs, lantern slides
Undated
Fossil specimen of Phegopter …
Unidentified photographer
[photographs, lantern slides
Undated
Fossil type specimen of Hodo …
Unidentified photographer
[photographs, lantern slides
Undated
Fossil specimen of an insect
Unidentified photographer
[photographs, lantern slides
Undated
Fossil specimen of Phenacole …
Unidentified photographer
[photographs, lantern slides
Undated
Theodore Cockerell and an un …
Unidentified photographer
[photographs, lantern slides
Undated
Fossil specimen of Porana te …
Unidentified photographer
[photographs, lantern slides
Undated
Fossil specimen of Vitis flo …
Unidentified photographer
[photographs, lantern slides
Undated
Fossil type specimen of Sapi …
Unidentified photographer
[photographs, lantern slides
Undated
Fossil specimen of Castanea …
Unidentified photographer
[photographs, lantern slides
Undated
Fossil specimen of Heyderia …
Unidentified photographer
[photographs, lantern slides
Undated
Fossil specimen of an insect
Unidentified photographer
[photographs, lantern slides
Undated
Fossil specimen of an butter …
Coulson & Son, photographer
[photographs, lantern slides
Undated
Fossil specimen of Panax and …
Unidentified photographer
[photographs, lantern slides
Undated
Fossil specimen of Phenanthe …
Unidentified photographer
[photographs, lantern slides
Undated
Fossil type specimen of Chlo …
Unidentified photographer
[photographs, lantern slides
Undated
Fossil specimen of Populus l …
Unidentified photographer
[photographs, lantern slides
Undated
Fossil specimen of Tipula ma …
Unidentified photographer
[photographs, lantern slides
Undated
Fossil specimen of Dryobius …
Unidentified photographer
[photographs, lantern slides
Undated
Fossil specimen of Calyptapi …
Unidentified photographer
[photographs, lantern slides
Undated
Fossil specimen of Pellaea a …
Unidentified photographer
[photographs, lantern slides
Undated
Fossil specimens of Trichoph …
Unidentified photographer
[photographs, lantern slides
Undated
Fossil specimen of Stipa lam …
Unidentified photographer
[photographs, lantern slides
Undated
Fossil specimen of Myrica di …
Unidentified photographer
[photographs, lantern slides
Undated
Fossil type specimen of Syrp …
Unidentified photographer
[photographs, lantern slides
Undated
Fossil specimen of Rhus cori …
Unidentified photographer
[photographs, lantern slides
Undated
Fossil specimen of Phymatode …
Unidentified photographer
[photographs, lantern slides
Undated
Fossil specimen of Pinus whe …
Unidentified photographer
[photographs, lantern slides
Undated
Fossil type specimen of Quer …
Unidentified photographer
[photographs, lantern slides
Undated
[photographs, slides (photog
Academy Glacier, Qaasuitsup, …
U.S. Coast Guard, photograph …
Undated
[photographs, slides (photog
Academy Glacier, Qaasuitsup, …
U.S. Coast Guard, photograph …
Undated
[photographs, slides (photog
Academy Glacier, Qaasuitsup, …
U.S. Coast Guard, photograph …
Undated
[photographs, slides (photog
Academy Glacier, Qaasuitsup, …
U.S. Coast Guard, photograph …
Undated
[photographs, slides (photog
Academy Glacier, Qaasuitsup, …
U.S. Coast Guard, photograph …
Undated
[photographs, gelatin silver
Piegan Glacier, Montana
Unidentified photographer
Undated
[photographs, photographic p
View of Greenland from space
Unidentified photographer
Undated
[photographs, photographic p
Unknown glacier, unknown loc …
Unidentified photographer
Undated
[photographs, space photogra
View of Antarctica from spac …
Unidentified photographer
Undated
[photographs, space photogra
View of Antarctica from spac …
Unidentified photographer
Undated
[photographs, photographic p
Unknown glacier
Unidentified photographer
Undated
[photographs, chromogenic co
Dawes Glacier, Alaska
Unidentified photographer
Undated
[photographs, chromogenic co
Dawes Glacier, Alaska
Unidentified photographer
Undated
[photographs, slides (photog
Unknown glacier
Unidentified photographer "T …
Undated
[photographs, slides (photog
Unknown glacier
Unidentified photographer "T …
Undated
[photographs, slides (photog
Unknown glacier
Unidentified photographer "T …
Undated
[photographs, photographic p
No glacier, Des Moines count …
Unidentified photographer
Undated
[photographs, slides (photog
Major projects 1977-1986 (li …
Unidentified photographer
Undated
[photographs, gelatin silver
No glacier, Des Moines count …
Unidentified photographer
Undated
[photographs, slides (photog
Data holdings of World Data …
Unidentified photographer