Chronological Files--US Patent Office Document--"Improvement in Water-Tube Steam-Generators, 1879

Chronological Files--US Patent Office Document--"Improvement in Water-Tube Steam-Generators, 1879, Box: Series 10, Box 1, Folder: 32. Ward Engineering Company Archives and Manuscripts, A&M 2298. West Virginia and Regional History Center. https://archives.lib.wvu.edu/repositories/2/archival_objects/144368 Accessed December 23, 2024.