1. Geodetic connection of the Atlantic and Pacific coast triangulations : Illinois and Missouri, June 30, 1882 Yale Public content 1882. 2013-10-02T19:24:37Z. 2018-12-10T20:17:56Z. U.S. Coast and Geodetic Survey, issuing body. U.S. Coast and Geodetic Survey. English. cartographic image. Public. Mississippi River and Missouri River.