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Description

Scarce first edition of this early map showing the results of Mason & Dixon's survey of the boundaries between Pennsylvania and Maryland.

Following a dispute of nearly 100 years, the Penn and Calvert (Lord Baltimore) families finally settled their dispute over the boundary between the two colonies in the mid 18th Century. Initial attempts to employ local surveyors failed to produce a satisfactory map, which led to the employment of Charles Mason and Jeremiah Dixon, to travel to America to lay down a proper survey.

The survey resulted in a two sheet manuscript map, of which this is a reduced version of the Eastern sheet. The map first appeared in the Transactions of the Royal Philosophical Society, the source of this example. The map was later re-issued in the November 1769 edition of the Gentlemen's Magazine.

A fine example on a huge oversized sheet. While the Gentlemen's Magazine edition appears on the market, this edition is now quite rare.