B/W folding chart showing the Progress of the Surveys and Resurveys of the Gulf Coast of Florida and Alabama. The map and shows the main lines of triangulation made during the year ending in June 30th, 1893.
Surveys of the Gulf Coast of Florida and Alabama, 1893
Chart 18. Progress of the Progress of the Surveys and Resurveys of the Gulf Coast of Florida and Alabama, June 30, 1893.