271. New Castle County Department of Planning. An Architectural Spectrum: New Castle County, Delaware. 1977. H1.3/No. 3

271. New Castle County Department of Planning. An Architectural Spectrum: New Castle County, Delaware. 1977. H1.3/No. 3, Box: 31. William J. Cohen papers, MSS 0468. University of Delaware Library Special Collections. https://findingaids.lib.udel.edu/repositories/2/archival_objects/191924 Accessed September 19, 2024.