This is the earliest known Evans map. See Henry N. Stevens' Third Edition of "Lewis Evans, His Map of the Middle British Colonies in America..." London, 1924, Huntington GA407 E9 S82. This volume also contain the Second Edition of Stevens' work printed in 1920, and a facsimile of a reprint of Evans' map done in 1752 with numerous corrections, known here as 18212a. Views of that map are of Steven's reproduction. Governor Pownall in his "Topographical Description of North America," 1776, notes Evans' 1749 map as "printed at Philadelphia 1749." For the 1752 edition of this map, see RB 53261. Distance table. MS note: 18212. Prime meridian: London, Philadelphia. Relief: pictorial. Graphic Scale: Miles. Projection: Pseudocylindrical. Printing Process: Copper engraving. Verso Text: Stamped: I. MS notes: A 1749 X flat Evans, Lewis - 18212 ; In case with this are: 18213-30, 18193-5.
North America--Maps Middle Atlantic States--Maps Ohio River Valley--Maps Virginia--Maps Virginia--Description and travel--Maps Middle Atlantic States--Description and travel--Maps Ohio River Valley--Description and travel--Maps
North America United States New York Connecticut Pennsylvania New Jersey Delaware Maryland Virginia W 78° W 73°/N 44° N 38°
Huntington Rare Book Maps Maps, Huntington Digital Library