1. Topographic quadrangle maps. South Dakota, Wessington NE quadrangle, lat. 44°22′30″-44°30′, long. 98°30′-98°37′30″. Scale 1: 24,000, contour interval 10 ft. Bookmark Corporate/Agency Authors: Geological Survey and Interior Dept. Publisher: Geological Survey Date: edition Of 1950 SuDoc number: I 19.21:41 W 519ne/950