229.1 Larson, Peter and Cy Liberman. Arden, Delaware-Utopian Experiment in Single Tax and Success as a Planned Community. 1973. U0.2/No. 6

229.1 Larson, Peter and Cy Liberman. Arden, Delaware-Utopian Experiment in Single Tax and Success as a Planned Community. 1973. U0.2/No. 6, Box: 29. William J. Cohen papers, MSS 0468. University of Delaware Library Special Collections. https://findingaids.lib.udel.edu/repositories/2/archival_objects/191845 Accessed September 19, 2024.