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Desert pave, no vegetation |
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1921-05-25 |
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Same desert type, pave, no vegetation |
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1921-05-25 |
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Veg. at back, Ironwood, Opuntia |
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1921-05-26 |
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Ironwood, annuals on pave |
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1921-05-26 |
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C.F. Marbut |
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1921-05-26 |
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Desert pave, Covillea, Gaertneria |
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1921-05-26 |
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Desert pave, Covillea, Gaertneria |
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1921-05-26 |
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Desert pave, soil sampling |
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1921-05-26 |
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Ironwood, Palo Verde, on desert |
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1921-05-26 |
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Giant cactus, ironwood, Covillea |
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1921-05-26 |
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View of desert toward mountains |
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1921-05-26 |
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Carnegiea, cholla, Isocoma |
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1921-05-28 |
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Detail of Carnegiea |
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1921-05-28 |
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Original wall of Casa Grande ruins |
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1921-05-28 |
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Casa Grande ruin |
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1921-05-28 |
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Grinding stone, pottery at ruin |
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1921-05-28 |
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Old compartment of ruin |
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1921-05-28 |
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Old compound of ruins |
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1921-05-28 |
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View near ruins, vegetation |
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1921-05-28 |
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Flower of Carnegiea gigantea |
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1921-05-29 |
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Detail of Carnegiea |
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1921-05-29 |
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Cholla, Carnegiea, Isocoma, Covillea, typical of large areas |
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1921-05-29 |
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Grassland with bear grass |
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1921-05-31 |
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Grassland with bear grass |
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1921-05-31 |
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Yucca, grassland reduced to weed grass stage |
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1921-05-31 |
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View of grassland, Boutelouas |
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1921-05-31 |
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Grassland, rocky hilltops |
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1921-05-31 |
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Grassland, yucca, agave, bear grass |
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1921-05-31 |
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Grass, Bouteloua hirsuta, general view |
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1921-05-31 |
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Grassland with bear grass, Yucca |
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1921-05-31 |
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Grassland with bear grass |
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1921-05-31 |
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Yucca plants in fruit |
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1921-05-31 |
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Yucca elata on weed grass |
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1921-05-31 |
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Over grazed desert grassland |
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1921-05-31 |
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Alkali flat, no plants at all |
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1921-05-31 |
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Alkali flat, no veg., white alkali |
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1921-05-31 |
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Prosopis in flower |
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1921-06-01 |
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Yucca elata, Gutierrezia, grass |
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1921-06-01 |
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Over grazed grassland with veg. |
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1921-06-01 |
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Prosopis, Gutierrezia on Mojave loam |
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1921-06-01 |
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Prosopis in bloom |
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1921-06-01 |
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Pure Covillea |
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1921-06-02 |
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Pure Covillea, 11 mi. south |
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1921-06-02 |
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Panorama, alfalfa and grain fields with cottonwood along Valley. Covillea, desert shrub on hill, mountains beyond |
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1921-06-02 |
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Panorama, alfalfa and grain fields with cottonwood along Valley. Covillea, desert shrub on hill, mountains beyond |
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1921-06-02 |
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Panorama, alfalfa and grain fields with cottonwood along Valley. Covillea, desert shrub on hill, mountains beyond |
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1921-06-02 |
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Cat's claw in bloom |
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1921-06-03 |
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Apache teepee, soil alkali |
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1921-06-03 |
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Teepee, cedar tree at right |
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1921-06-03 |
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Poa, Bouteloua gracilis, yellow pine, Aspen, Douglas fir, near divide |
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1921-06-04 |
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