http://pec.lib.wvu.edu/record/P36751855The History of Mason and Dixon's line : contained in an address, delivered by John H. B. Latrobe, of Maryland, before the Historical Society of Pennsylvania, November 8, 1854. Monograph. Latrobe, John H. B. (John Hazlehurst Boneval), 1803-1891)Mason-Dixon Line.Maryland--Boundaries--Pennsylvania.Pennsylvania--Boundaries--Maryland.14256