443. The Delaware River Basin Comprehensive (Level B) Study. West Trenton, N.J.: Delaware River Basin Commission, 1981. R2.4/No. 19

443. The Delaware River Basin Comprehensive (Level B) Study. West Trenton, N.J.: Delaware River Basin Commission, 1981. R2.4/No. 19, Box: 40. William J. Cohen papers, MSS 0468. University of Delaware Library Special Collections. https://findingaids.lib.udel.edu/repositories/2/archival_objects/192367 Accessed September 19, 2024.