1. Map illustrating the plan of the defences of the western & north-western frontier : as proposed by Charles Gratiot in his report of Oct. 31, 1837 Yale Public content 1837. 2002-06-01T04:00:00Z. 2017-07-04T21:13:50Z. Hood, Washington. s.n., Bowen & Co., Lith.). English. Public. United States.