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Structural relations shown in north wall of Santa Clara Canyon: at eastern margin of the Trinidad coalfield. Huerfano County, Colorado. 1909. Plate 16-A, with sketch, in U.S. Geological Survey. Professional paper 101. 1917.
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Unconformity between late Tertiary gravels and tilted Pleistocene or recent gravels in San Emigdio region, looking east across first arroyo west of San Emigdio creek. Kern County, California. November 3, 1912. Plate 14-A, with sketch, in U.S. Geological Survey. Professional paper 116. 1920.
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North wall of Tercio Park, showing structural relations: Cornell, Las Animas County, Colorado. 1909. Plate 19-A, with sketch, in U.S. Geological Survey. Professional paper 101. 1917.