Principal waterways of the United States 10426263 Seymour B. Durst Old York Library Seymour B. Durst Old York Library Collection 38.0,-96.5 3.0,6.5 United States. Army., Office of the Chief of Engineers United States. Army., Corps of Engineers Nautical charts. Scale 1:7,000,000 7000000 https://dlc.library.columbia.edu/durst/cul:3bk3j9kd61 http://www.columbia.edu/cgi-bin/cul/resolve?clio11582629 Waterways--United States--Maps. "1942." "3-49." "Engraved by U.S.G.S." Shows completed and projected channels for waterways imporved by the U.S., and State, foreign and privately-owned waterways Avery Classics copy: Seymour B. Durst Old York Library Collection, Avery Architectural & Fine Arts Library, Columbia University cartographic Army Map Service, Corps of Engineers, Dept. of the Army 1949 1949 [Washington, D.C.] maps 1 map : col. ; 43 x 70 cm. NNC eng 2015-02-02T18:07:03Z 2017-04-07T08:46:09Z 10.7916/D8G163R3