Charles Doolittle Walcott (1850-1927). Paleontologist and geologist; director of the USGS.
Walderman Lindgren (1860-1939). Born in Sweden, Lindgren moved to United States where he worked as an economic geologist for the USGS.
Library Edition. One of the 227 folios issued by the USGS between 1894 and 1945. Large format soft bound.
Digital Copy of this book can be found at