362.1 U.S. Army Corps of Engineers. Flood Plain Information Christina River Muddy and Belltown Runs New Castle County Delaware. Philadelphia, Pa.: U.S Army Corps of Engineers, 1968. S5.4/No. 2

362.1 U.S. Army Corps of Engineers. Flood Plain Information Christina River Muddy and Belltown Runs New Castle County Delaware. Philadelphia, Pa.: U.S Army Corps of Engineers, 1968. S5.4/No. 2, Box: 37. William J. Cohen papers, MSS 0468. University of Delaware Library Special Collections. https://findingaids.lib.udel.edu/repositories/2/archival_objects/192236 Accessed September 19, 2024.