1968.123.011
Lithograph
St. Mary's Falls Canal,
The Accumulator Pumps
Plan sheet (sheet 11 of 17) from a set of lithographs that shows St. Mary's Falls Canal & Locks at Sault Ste. Marie, Michigan. This sheet, Plate 9, is entitled "St. Mary's Falls Canal. The Accumulator Pumps." The sheet shows plan and profile views of the accumulator pump machinery which supplied energy for the operation of the lock gates. The drawings and text are printed in black ink on slightly yellowed paper that has a black borderline. Small printed text at the lower right corner shows "N. Peters. Photo-Lithographer, Washington, D.C."
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