Triangulation in Wisconsin and Minnesota, 1893

Chart 19. Progress of the Triangulation in Wisconsin and Minnesota, June 30, 1893.

Report of the Superintendent of the U. S. Coast and Geodetic Survey showing the progress of the work during the fiscal year ending with June 1893. Washington: Goverment Printing Office. 1894.

Not stated

~20 x 15

Good. Generally clean, cream color toning, lighly darker along folds, as is common. Separations along some folds were repaired/reinforced with acid free tape, map may have some openings at fold intersections, though mostly they have been reinforced. Pictures illustrate the condition of the map. Map is solid and stable, but should be handled with care. 

United States, triangulation map, Wisconsin, Minnesota, Upper Midwest, U.S. Coast and Geodetic Survey, 1894