1. Topographic quadrangle maps. New York, Wappingers Falls, lat. 41°30′-41 °37′30″, long, 73°32′30″-74°. Scale 1:24,000, contour interval 20 ft. Bookmark Corporate/Agency Authors: Geological Survey and Interior Dept. Publisher: Geological Survey Date: reprinted by Geological Survey, 1947 SuDoc number: I 19.15:32 W 193/947