The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
Detroit. Michigan. Tunnel to Canada. Entrance. Detroit Windsor Tunnel. Plastichrome by Colourpicture. Mass. U. S. A. Hiawatha Card. Lucy Gridley
Jack Fish Tunnel. Lake Superior. Canada. 100521. Valentine. Canadian Pacific Railway News Service
Tunnel Busses in Detroit Windsor Tunnel. Windsor. Ontario. Canada. 1939
Mink Tunnel. Lake Superior. Canada
Mink Tunnel. Lake Superior. Canada. Valentine
Mink Tunnel. Lake Superior. Canada. Canadian Pacific Railway. Bill Hopkins Collection
Mink Tunnel. Lake Superior. Canada. Valentines. 1913
