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Howard, R.A. Provided by Smithsonian Institution, Richard A. Howard Photograph Collection. United States, Colorado, Larimer Co., Estes Park.
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Howard, R.A. Provided by Smithsonian Institution, Richard A. Howard Photograph Collection. United States, Massachusetts, Middlesex Co., Weston.
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W.D. Brush. Provided by National Agricultural Library. United States, District of Columbia, Washington.
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Provided by National Agricultural Library.
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Herman, D.E., et al. Provided by ND State Soil Conservation Committee. United States, North Dakota.
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Herman, D.E., et al. Provided by ND State Soil Conservation Committee. United States, North Dakota.
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Herman, D.E., et al. Provided by ND State Soil Conservation Committee. United States, North Dakota.
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Herman, D.E., et al. Provided by ND State Soil Conservation Committee. United States, North Dakota.
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A. Gaskill. Provided by National Agricultural Library. United States, Washington.
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G.E. Griffith. Provided by National Agricultural Library. United States, Washington, Wenatchee National Forest.
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K.D. Swan. Provided by National Agricultural Library. United States, Montana.
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Provided by National Agricultural Library. United States, Arizona.
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Provided by National Agricultural Library. United States, Washington, Gifford Pinchot National Forest.
