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Provided by National Agricultural Library. United States, California, Inyo National Forest.
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Provided by National Agricultural Library. United States, California, Inyo National Forest.
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Provided by National Agricultural Library. United States, California, Inyo National Forest.
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Provided by National Agricultural Library. United States, Utah, Dixie National Forest.
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Provided by National Agricultural Library. United States, Utah, Dixie National Forest.
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Provided by National Agricultural Library. United States, Utah, Dixie National Forest.
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Provided by National Agricultural Library. United States, Utah, Dixie National Forest.
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Provided by National Agricultural Library. United States, Utah, Dixie National Forest.
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Provided by National Agricultural Library. United States, Utah, Dixie National Forest.
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Provided by National Agricultural Library. United States, Wyoming, Laramie Co..
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Robert C. Salton. Provided by National Agricultural Library. United States, Arizona.
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Howard, R.A. Provided by Smithsonian Institution, Richard A. Howard Photograph Collection. United States, California, Santa Cruz Co., Big Basin, Pine Mountain.
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John D. Guthrie. Provided by National Agricultural Library. United States, Oregon.
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C. Miller. Provided by National Agricultural Library. United States, California, San Bernardino Mountains.
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L.C. Miller. Provided by National Agricultural Library. United States, California, Angeles National Forest.
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L.H. Pammel. Provided by National Agricultural Library. United States, Colorado.
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G.B. Sudworth. Provided by National Agricultural Library.
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G.B. Sudworth. Provided by National Agricultural Library.
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J.A. Cary. Provided by National Agricultural Library. United States, California, Shasta National Forest.
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M.H. Davis. Provided by National Agricultural Library. United States, California, Shasta National Forest.
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W.H. Shaffer. Provided by National Agricultural Library. United States, Utah.
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W.H. Shaffer. Provided by National Agricultural Library. United States, Utah.
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W.H. Shaffer. Provided by National Agricultural Library. United States, Utah.
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Herman, D.E., et al. Provided by ND State Soil Conservation Committee. United States, North Dakota.