Line drawings from journa.; 4to ; 231 pages; Transcribed from the original in the United States National Archives; with an introduction by A. Hughlett Mason. Map. Charles Mason maintained field notes throughout the nearly 5 years it took to complete his survey. The journal includes mathematical and astronomical data, as well as the daily progress of the survey. Prior to hiring Mason and Dixon to settle a boundary line once and for all, the quarreling parties of Maryland and Pennsylvania agreed that the line separating the two provinces would be run east to west along a latitudinal arc 15 mi... View More...
