Part of the Frick Collection Archives Repository
Volume 3, 1887-1890, Box: 5-6. Henry Clay Frick Papers, Series X: Invoice Books, FFP.01.10. Frick Collection Archives.
Volume 3, 1887-1890, Box: 5-6. Henry Clay Frick Papers, Series X: Invoice Books, FFP.01.10. Frick Collection Archives. https://archives.frick.org/repositories/3/archival_objects/9236 Accessed June 05, 2025.
