1764Thomas Jeffreys (engraver) – Thomas Salmon (historian): “Poland Lithuania and Prussia,” 9.5 x 7.5 inches. 1764 was the 9th, London, edition of “A New geographical and historical grammar…” and so, with three different cartouche types represented in this group, the date attributions from these sources can’t all be correct. I’m inclined to say that only the first and fourth maps are from 1764.