More on creating the Mason-Dixon Line...
Item # 674769 SUPPLEMENT TO THE GENTLEMAN'S MAGAZINE, London, for the year 1769 This is the "supplement" issue provided at the end of the year containing various articles much like the regular issues but containing fewer pages. It has just a one-third page masthead and also includes the table of contents on the front page.
Articles include an: "Accurate List of the Knights, Burgesses, & Citizens returned to serve in the present Parliament" & "Further Reflections on Mess. Mason's and Dixon's Measure of a Degree of Latitude in North America", they of the Mason-Dixon Line fame, & which is a continuation of a lengthier article--and map--which is in the December issue. Other articles as well.
No plates are called for.
Measures 5 1/2 by 8 3/4 inches, 32 pages, very nice condition.