Title: Beaver, Shenango, and Mahoning Rivers, Pa. and Ohio. Letter from the Secretary of War transmitting a letter from the Chief of Engineers, United States Army, dated March 3, 1934, submitting a report, together with accompanying papers and illustrations, on a preliminary examination and survey of Beaver, Shenango, and Mahoning Rivers, Pa. and Ohio, authorized by the River and Harbor Act approved July 3, 1930
Subjects: Maps, Topographical surveying
Places: Pennsylvania