Ajoins map and profile of Lock 29 and 30 near Schoharie Creek, numbered Volume 10X, #39.
New York State Archives. New York (State). State Engineer and Surveyor. Map and plan books of the location and construction of the state's canal system, [ca. 1827-1905] (bulk 1850-1880) Series B0292-85, Vol. 10X, p. 40.
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