1. Triangulation between the Hudson and St. Croix Rivers : June 30, 1883 Yale Public content 1883. 2013-10-10T14:40:58Z. 2018-12-18T20:00:31Z. U.S. Coast and Geodetic Survey, issuing body. United States Coast and Geodetic Survey. English. cartographic image. Public. New England and Hudson River (N.Y. and N.J.).