Part of the Frick Collection Archives Repository
McCook, John J., 1899-1904, Box: 57, Folder: 5. Henry Clay Frick Papers, Series II: Correspondence, FFP.01.02. Frick Collection Archives.
McCook, John J., 1899-1904, Box: 57, Folder: 5. Henry Clay Frick Papers, Series II: Correspondence, FFP.01.02. Frick Collection Archives. https://archives.frick.org/repositories/3/archival_objects/4062 Accessed August 15, 2025.
