800 B.H.P. Towboat, Twin Screw Tunnel Type (designed by Ward Engineering for Gulf Refinery Company, New York, NY), undated

800 B.H.P. Towboat, Twin Screw Tunnel Type (designed by Ward Engineering for Gulf Refinery Company, New York, NY), undated, Box: Series 11, Box 1, Folder: 7. Ward Engineering Company Archives and Manuscripts, A&M 2298. West Virginia and Regional History Center. https://archives.lib.wvu.edu/repositories/2/archival_objects/144423 Accessed December 23, 2024.