Alternation, more veg. |
United States, Colorado |
1915-08-24 |
Alternations of Sporobolus, Covillea |
United States, New Mexico |
1916-10-06 |
Amaranthus |
Burundi |
1920-03-21 |
Amaranthus retroflexus |
United States, Colorado |
1912-09-18 |
Amaranthus retroflexus |
United States, Colorado |
1912-09-18 |
Amaranthus retroflexus |
United States, Colorado |
1912-09-18 |
American elm at New Willard [Hotel] |
United States, District of Columbia |
1910-10-17 |
American elm at New Willard [Hotel] |
United States, District of Columbia |
1910-10-17 |
American elm at New Willard [Hotel] |
United States, District of Columbia |
1910-10-17 |
American elm at New Willard [Hotel] |
United States, District of Columbia |
1910-10-17 |
An ant highway |
Tanzania |
1920-03-27 |
An old door |
Tanzania |
1920-04-05 |
An old tree |
Tanzania |
1920-04-08 |
Anarcardium occidentale |
Mozambique |
1919-10-25 |
Andropogen scoparius, Andropogon hallii |
United States, New Mexico |
1916-10-07 |
Andropogen scoparius, Andropogon hallii |
United States, New Mexico |
1916-10-07 |
Andropogen scoparius, Andropogon hallii |
United States, New Mexico |
1916-10-07 |
Andropogon |
United States, New Mexico |
1917-11-28 |
Andropogon |
Tanzania |
1920-03-28 |
Andropogon |
Tanzania |
1920-03-28 |
Andropogon and trees |
Tanzania |
1920-03-28 |
Andropogon Hallii |
United States, Colorado |
1911-09-13 |
Andropogon hallii, etc. |
United States, Colorado |
1914-07-17 |
Andropogon only where favored, and in succession stages |
United States, Colorado |
1940-06-15 |
Andropogon only where favored, and in succession stages |
United States, Colorado |
1940-06-15 |
Andropogon only where favored, and in succession stages |
United States, Colorado |
1940-06-15 |
Andropogon only where favored, and in succession stages, Dup. P-7-1908 |
United States, Colorado |
1940-06-15 |
Andropogon overgrown gun mounting |
Tanzania |
1920-03-27 |
Andropogon scoparius, Andropogon hallii |
United States, New Mexico |
1916-10-07 |
Andropogon veg., Erigeron |
United States, Maryland |
1917-01-14 |
Annona with ants nest |
South Africa, Mpumalanga |
1919-10-18 |
Annual salicornia |
United States, Utah |
1912-08-06 |
Anogra Sand Creek |
United States, Colorado |
1915-08-16 |
Anogra, Sporobolus airoides |
United States, Utah |
1926-06-08 |
Ant Hill |
United States, Colorado |
1916-07-22 |
Ant Hill |
United States, Colorado |
1916-07-22 |
Ant hill |
Zambia, Kafue River |
1919-11-20 |
Ant hill |
United States, Utah |
1925-09-21 |
Ant hill, huts |
Democratic Republic of the Congo |
1920-02-09 |
Antennaria |
United States, Arizona, Kaibab, V.T. Ranch |
1929-06-28 |
Antennaria, Bouteloua gracilis, Oak |
United States, Arizona, Grand View |
1918-07-25 |
Antennaria, Grama, Yellow Pine |
United States, Arizona, Grand View |
1918-07-25 |
Antennaria, Grama, Yellow Pine |
United States, Arizona, Grand View |
1918-07-25 |
Apache hogan |
United States, Arizona |
1932-06-05 |
Apache Indian hogan |
United States, Arizona, Coolidge Dam |
1932-06-05 |
Apache Indian hogan |
United States, Arizona, Coolidge Dam |
1932-06-05 |
Apache Indians |
United States, Arizona, Coolidge Dam |
1932-06-05 |
Apache Indians |
United States, Arizona |
1932-06-05 |
Apache teepee, soil alkali |
United States, Arizona |
1921-06-03 |
Apple |
United States, Colorado |
1912-08-22 |