Part of the Frick Collection Archives Repository
Knox, William F., 1945-1975, Box: 8, Folder: 2. Helen Clay Frick Papers, Series II: Correspondence, FFP.02.02. Frick Collection Archives.
Knox, William F., 1945-1975, Box: 8, Folder: 2. Helen Clay Frick Papers, Series II: Correspondence, FFP.02.02. Frick Collection Archives. https://archives.frick.org/repositories/3/archival_objects/9589 Accessed March 15, 2025.
