Plumbing
Part of the Frick Collection Archives Repository
Linn (Pittsburgh, Pa.), 1904, Box: 31, Folder: 47. Henry Clay Frick Papers, Series IV: Receipts, FFP.01.04. Frick Collection Archives.
Linn (Pittsburgh, Pa.), 1904, Box: 31, Folder: 47. Henry Clay Frick Papers, Series IV: Receipts, FFP.01.04. Frick Collection Archives. https://archives.frick.org/repositories/3/archival_objects/7078 Accessed December 09, 2025.
