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

Edwin Danson is a geodetic surveyor with over 45 years of experience working on assignments in many countries, including the United States. He is a Chartered Surveyor of the Royal Institution of Chartered Surveyors and a Fellow of the Institution of Civil Engineering Surveyors. He has made many contributions to professional journals and books and is a prominent authority in his field. He lives near Bristol, England.