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Browse All : Atlas Map of Philippines from 1953

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Aspen District Sheet. G...
Aspen District Sheet.
1898
Geologic Atlas
Author
Spurr, Josiah Edward
Full Title
Aspen District Sheet. Geology Sheet VI . U. S. Geological Survey, Charles D. Walcott, Director. Monograph XXXI. A.H. Thompson, Geographer. Morris Bien, Topographer in charge. Triangulation by Morris Bien. Topography by F.F. Grove. Surveyed in 1891. S.F. Emmons, Geologist in charge. Geology by J.E. Spurr. Assistant, G.W. Tower. Julius Bien & Co. Lith. N.Y. (1898)
Publisher
United States Geological Survey
Aspen Special Sheet. Ge...
Aspen Special.
1898
Geologic Atlas
Author
Spurr, Josiah Edward
Full Title
Aspen Special Sheet. Geology Sheet IX. U. S. Geological Survey, Charles D. Walcott, Director. Monograph XXXI. A.H. Thompson, Geographer. Morris Bien, Topographer in charge. Triangulation by Morris Bien. Topography by F.F. Grove. Surveyed in 1891. S.F. Emmons, Geologist in charge. Geology by J.E. Spurr. Assistant, G.W. Tower. Julius Bien & Co. Lith. N.Y. (1898)
Publisher
United States Geological Survey
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