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404. William J. Cohen and Associates, Inc. Subdivision Regulations: Town of Middletown, Delaware September, 1981. Newark, Del.: William J. Cohen and Associates, Inc., 1981., Box: 39. William J. Cohen papers, MSS 0468. University of Delaware Library Special Collections. https://findingaids.lib.udel.edu/repositories/2/archival_objects/192313 Accessed September 19, 2024.