Part of the Frick Collection Archives Repository
"True Blue Echo", 1912-1915, Box: 66, Folder: 4-5. Helen Clay Frick Papers, Series III: Iron Rail Vacation Home, FFP.02.03. Frick Collection Archives.
"True Blue Echo", 1912-1915, Box: 66, Folder: 4-5. Helen Clay Frick Papers, Series III: Iron Rail Vacation Home, FFP.02.03. Frick Collection Archives. https://archives.frick.org/repositories/3/archival_objects/10757 Accessed July 07, 2025.
