The second edition of Drawing the Line: How Mason and Dixon Surveyed the Most Famous Border in America updates Edwin Danson’s definitive history of the creation of the Mason - Dixon Line to reflect new research and archival documents that have come to light in recent years.


Features numerous updates and revisions reflecting new information that has come to light on surveyors Charles Mason and Jeremiah Dixon
Reveals the true origin of the survey’s starting point and the actual location of the surveyors’ observatory in Embreeville
Offers expanded information on Mason and Dixon’s transit of Venus adventures, which would be an important influence on their future work, and on Mason’s final years pursuing a share of the fabulous Longitude prize, and his death in Philadelphia
Includes a new, more comprehensive appendix describing the surveying methods utilized to establish the Mason-Dixon Line