Part of the Frick Collection Archives Repository
Macdonald, Charles Blair, 1906-1918, Box: 56, Folder: 1. Henry Clay Frick Papers, Series II: Correspondence, FFP.01.02. Frick Collection Archives.
Macdonald, Charles Blair, 1906-1918, Box: 56, Folder: 1. Henry Clay Frick Papers, Series II: Correspondence, FFP.01.02. Frick Collection Archives. https://archives.frick.org/repositories/3/archival_objects/4047 Accessed July 16, 2025.
