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The Huntington Library has a set of maps based on Lewis Evans' "A General Map of the Middle British Colonies..." These are copies of Evans' map done by various mapmakers at varying times. Evans' original was made in 1755, he died in 1756. Henry N. Stevens put this set together in the 1920's. A new plate was engraved by Kitchin in 1756. Thomas Jefferys acquired that plate and in 1758 put his name on it as "Sold by T. Jefferys Charing Cross 1758." The plate mark measures 67-1/2 cm by 49 cm. A modified version was later issued (Stevens suggests in 1768) noting, "Sold by R. Sayer in Fleet Street and T. Jefferys Charing Cross 1758". This plate mark measures 66 cm by 48.3 cm, noticably smaller than the 1758 version. This 1768 map shows some plate wear, but otherwise seems identical to the 1758 map. It seems unlikely that anyone would engrave a slightly smaller plate and if they did, would not change the date. Both maps seem to have the same watermark, both are linen backed. The question is, could these two maps have been made from the same plate? Is that print size difference unusual? A few millimeters I could understand. Any comments would be helpful. Bill Warren 1109 Linda Glen Drive Pasadena, CA 91105 (626) 792-9152 [email protected]
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