Dead fir |
United States, Arizona, San Francisco Peak |
1929-08-10 |
Festuca arizonica, etc. camp |
United States, Arizona, Aspen Springs |
1929-08-10 |
Vegetation on mt. |
United States, Arizona, San Francisco Peak |
1929-08-10 |
Dead cork bark fir |
United States, Arizona, San Francisco Peak |
1929-08-10 |
Engelmann spruce, dead |
United States, Arizona, San Francisco Peak |
1929-08-10 |
Pinus, spruce, aspen, meadow |
United States, Arizona, San Francisco Peak |
1929-08-10 |
Men on Mt., trees |
United States, Arizona, San Francisco Peak |
1929-08-10 |
Bark of Abies arizonica |
United States, Arizona, San Francisco Peak |
1929-08-10 |
Class |
United States, Arizona, Aspen Springs |
1929-08-10 |
Class |
United States, Arizona, Aspen Springs |
1929-08-10 |
Lecanora calcarea |
United States, Arizona, San Francisco Peak |
1929-08-10 |
Lichens |
United States, Arizona, San Francisco Peak |
1929-08-10 |
Muhlenbergia gracilis, etc. |
United States, Arizona, Aspen Springs |
1929-08-15 |
[John J.] Thornber |
United States, Arizona, Aspen Springs |
1929-08-15 |
Ecology class 1929 |
United States, Arizona, Aspen Springs |
1929-08-15 |
Ecology class |
United States, Arizona, Aspen Springs |
1929-08-15 |
Large leaf ranunculus, Elk slip |
United States, Arizona, Hannigans Meadow:White Mountains |
1929-10-18 |
Yellow pine, Engelmann spruce, aspen |
United States, Arizona, Hannigans Meadow:White Mountains |
1929-10-18 |
Poa arizonica, Aspen, Engelmann spruce |
United States, Arizona, Hannigans Meadow:White Mountains |
1929-10-18 |
Aspen |
United States, Arizona, Hannigans Meadow:White Mountains |
1929-10-18 |
Hannigans Meadow |
United States, Arizona, Hannigans Meadow:White Mountains |
1929-10-18 |
Sporobolus, Fragaria, gophers |
United States, Arizona, Hannigans Meadow:White Mountains |
1929-10-18 |
Winn, Musgrave, Reddington |
United States, Arizona, Musgrave Ranch |
1929-10-21 |
Shantz, Musgrave |
United States, Arizona, Musgrave Ranch |
1929-10-21 |
Men |
United States, Arizona, Musgrave Ranch |
1929-10-21 |
Camp |
United States, Arizona, Musgrave Ranch |
1929-10-21 |
Camp |
United States, Arizona, Musgrave Ranch |
1929-10-21 |
Winn, Musgrave, Reddington |
United States, Arizona, Musgrave Ranch |
1929-10-21 |
Cotton field |
United States, Arizona |
1929-10-22 |
Egyptian cotton |
United States, Arizona |
1929-10-22 |
Cotton picking |
United States, Arizona |
1929-10-22 |
Cotton picking |
United States, Arizona |
1929-10-22 |
Cotton picking |
United States, Arizona |
1929-10-22 |
Cotton picking |
United States, Arizona |
1929-10-22 |
Hilaria rigida |
United States, Arizona |
1929-10-28 |
Hilaria rigida |
United States, Arizona |
1929-10-28 |
Kirkpatrick, Layton |
United States, Arizona |
1929-10-29 |
Kirkpatrick, Layton |
United States, Arizona |
1929-10-29 |
Hill |
United States, Arizona |
1929-10-29 |
Mann, McIntyre |
United States, Arizona, Kaibab |
1929-11-01 |
Gov. [John C.] Phillips, McIntyre |
United States, Arizona, Grand Canyon |
1929-11-02 |
[John C.] Phillips, McIntyre |
United States, Arizona, Grand Canyon |
1929-11-02 |
Edge |
United States, Arizona, Grand Canyon |
1929-11-05 |
Edge |
United States, Arizona, Grand Canyon |
1929-11-05 |
Yellow pine |
United States, Arizona, Grand Canyon |
1929-11-05 |
Erosion of shad land |
United States, Arizona |
1929-11-05 |
Erosion |
United States, Arizona |
1929-11-05 |
Over shad, air photo |
United States, Arizona |
1929-11-05 |
Over Grand Canyon |
United States, Arizona |
1929-11-05 |
Edge |
United States, Arizona, Grand Canyon |
1929-11-05 |