Design no. 30-A, undated Box 1, Folder 2 Bookmark Collection Context Bridgeport History Center, Bridgeport Public Library William Kolvig collection of Lake Torpedo Boat Company, 1922…
Detailed box and folder listing Bookmark Collection Context Bridgeport History Center, Bridgeport Public Library William Kolvig collection of Lake Torpedo Boat Company, 1922
Interoffice mailing envelope, undated Box 1, Folder 4 Bookmark Collection Context Bridgeport History Center, Bridgeport Public Library William Kolvig collection of Lake Torpedo Boat Company, 1922…
Patent #1428335, September 5, 1922 – Hydroplane operating mechanism for submarine boats by Kolvig, 1922 Box 1, Folder 1 Bookmark Collection Context Bridgeport History Center, Bridgeport Public Library William Kolvig collection of Lake Torpedo Boat Company, 1922…
Photoalbum, including submarines and photos of maritime paintings, undated Box 1, Folder 6 Bookmark Collection Context Bridgeport History Center, Bridgeport Public Library William Kolvig collection of Lake Torpedo Boat Company, 1922…
Photograph, the submarine Salmon, undated Box 1, Folder 5 Bookmark Collection Context Bridgeport History Center, Bridgeport Public Library William Kolvig collection of Lake Torpedo Boat Company, 1922…
Scientific section, undated Box 1, Folder 3 Bookmark Collection Context Bridgeport History Center, Bridgeport Public Library William Kolvig collection of Lake Torpedo Boat Company, 1922…
William Kolvig collection of Lake Torpedo Boat Company, 1922 Bookmark Collection Context Bridgeport History Center, Bridgeport Public Library