B/W chart showing the extent of triangulation from Atlanta Base to the Gulf of Mexico (Mobile Bay) and Triangulation in Eastern Tennessee during the year ending in June 30th, 1893.
Atlanta Base to the Gulf of Mexico and Triangulation in Tennessee, 1893
Chart 17. Sketch Showing extension of triangulation from Atlanta Base to the Gulf of Mexico with sub-sketch Showinbg the Triangulation in Eastern Tennessee. June 30, 1893.