1. Progress of the triangulation between Eastern Missouri and Western Kansas : along or near the 39th parallel. June 30, 1894 Yale Public content 1894. 2013-10-31T17:25:40Z. 2013-11-21T21:26:53Z. U.S. Coast and Geodetic Survey, issuing body. U.S. Coast and Geodetic Survey. English. Public. Middle West.