1. Water-level contours near La Grange, southeastern Wyoming and an adjacent part of Nebraska, April 30, 1980 [cartographic material] Yale Public content 1981. 2002-06-01T04:00:00Z. 2023-01-13T04:04:30Z. Geological Survey (U.S.). The Survey. English. cartographic image. Public. Wyoming, Nebraska, and Scottsbluff Region.