The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
Peterborough. Ontario. Canada. World Famous Hydraulic Lift Lock. Peterborough Post Card. H. R. Oakman
Peterboro. World Largest Hydraulic Lift Lock
The Peterborough Hydraulic Liftlock. Raises and Lowers Boats. Dexter Color. Friends of the Trent Severn Waterway. Hans Moritz
Canada. Ontario. Peterborough. Peterborough Hydraulic Liftlock Raises and Lowers Boats. Friends of the Trent Severn Waterway. Hans Moritz
Hydraulic Lift Lock. Side View. Peterboro. Ont. B. Hopkins
Canada. Ontario. Peterborough. Lift Locks. Peterborough Airways Ltd. H. R. Oakman
Ontario. Canada. Peterborough. Lift Locks. Peterborough Post Card. H. R. Oakmann
