Maps, plans, details, and drawings of structures and locations for work on the Erie, Genesee Valley, Chemung, and Oswego canals

This series documents the planning and estimating work done to various structures along the state's canals. The records include maps and plans of locations and structures for work done on the Erie (Middle and Western divisions only), Genesee Valley, Chemung, and Oswego canals, and at least one sheet relating to the Cayuga and Seneca Canal. The records date from the first canal enlargement through to the start of the canal improvements that became known as the Barge Canal system.