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The collection consists of 18 albums containing over 230 pages of 5 x 7 cyanotype photographs that photo-document the construction of the Peterborough Lift Lock in chronological order. Each album has a title such as: "Concrete: Main Walls and Wings", "Pit Excavation", "Hydro Lock Culvert", "Stone Pitching", "Taylor Air Compressor" and so on. The albums were likely produced for the Trent Canal or the federal Department of Public Works.