1. Plat of the northern boundary line of the state of Indiana : surveyed in conformity to the Act of Congress Maps University Of Minnesota Public content 1827. Haas, Philip, active 1837-1863. A true copy of the original plat in this Office. Surveyor General's Office - Chillicothe, 24th November 1827. Edwa. Tiffin, Sur. Gen.; "To authoriz... publisher not identified.