461.2 List of Navigable and Non-Navigable Waters in the Philadelphia District. 1972. C0.4/No. 5

461.2 List of Navigable and Non-Navigable Waters in the Philadelphia District. 1972. C0.4/No. 5, Box: 41. William J. Cohen papers, MSS 0468. University of Delaware Library Special Collections. https://findingaids.lib.udel.edu/repositories/2/archival_objects/192493 Accessed September 19, 2024.