Covers Potomac River watershed above Great Falls. Shows sub-watersheds, gaging stations, and reservoir sites. Title and imprint from accompanying text. On t.p. of accompanying text: Letter from the chairman of the Federal Power Commission ... together with the report of Maj. M.C. Tyler. Accompanied by t.p. and p. 91-102 of: Senate document no. 403, 60th Congress, 3d session : Development of Great Falls for water power ... 1921. [6] p. : tables, index ; 27 cm. In right upper margin: Plate IV. LC copy laminated. Accompanying text annotated in ink, rubber-stamped, and laminated. Available also through the Library of Congress Web site as a raster image. DCP
Tyler, M. C.; United States. Government Printing Office; United States. Congress. Senate; United States. Federal Power Commission
1921
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