tag:digital.library.illinois.edu,2005:/itemsItems2022-08-11T16:34:16Ztag:digital.library.illinois.edu,2005:Item/3659802020-06-17T13:08:44Z2022-08-11T16:34:16ZRock River from Janesville, Wis., to Sterling, Ill., in 41 sheets, including an index map. Surveyed and platted under the direction of Major Chas. Keller, Corps of Engineers, U.S.A., and L.L. Wheeler, U.S. Assistant Engineer by H.E. Reeves, U.S. Assistant Engineer, 1912-1913Likely published in Washington (D.C.).University of Illinois at Urbana-Champaign Library