Gifford Pinchot
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Forest atlas of the national forests of the United States Pl.02 by Gifford Pinchot (3)
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Forest atlas of the national forests of the United States Pl.04 by Gifford Pinchot (3)
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Forest atlas of the national forests of the United States Pl.05 by Gifford Pinchot (3)
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Forest atlas of the national forests of the United States Pl.10 by Gifford Pinchot (3)
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Forest atlas of the national forests of the United States Pl.26 by Gifford Pinchot (3)
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Forest atlas of the national forests of the United States Pl.34 by Gifford Pinchot (3)