Part of the Frick Collection Archives Repository
#123: Interest in Union Steel Co., 1900-1931, Box: 20, Folder: 4-6. Henry Clay Frick Papers, Series V: Subject Files, FFP.01.05. Frick Collection Archives.
#123: Interest in Union Steel Co., 1900-1931, Box: 20, Folder: 4-6. Henry Clay Frick Papers, Series V: Subject Files, FFP.01.05. Frick Collection Archives. https://archives.frick.org/repositories/3/archival_objects/8249 Accessed February 26, 2025.
