438.1 Cooperative Management for Recreation. Washington, D.C.: U.S. Department of the Interior, n.d. J4.6/No. 5

438.1 Cooperative Management for Recreation. Washington, D.C.: U.S. Department of the Interior, n.d. J4.6/No. 5, Box: 40. William J. Cohen papers, MSS 0468. University of Delaware Library Special Collections. https://findingaids.lib.udel.edu/repositories/2/archival_objects/192361 Accessed September 19, 2024.