EVANS, Lewis (ca 1700-1756). Geographical, Historical, Political, Philosophical and Mechanical Essays. The First, Containing an Analysis of a General Map of the Middle British Colonies in America; And of the Country of the Confederate Indians... Philadelphia: Benjamin Franklin and D. Hall, 1755. 4to (233 x 172 mm). 32 pages. LARGE ENGRAVED FOLDING MAP "A General Map of the Middle British Colonies" (500 x 670 mm platemark, 532 x 708 mm sheet). Modern red morocco; blue cloth folding case. Provenance: Frank S. Streeter (bookplate). "ONE OF THE MOST IMPORTANT MAPS PUBLISHED IN AMERICA BEFORE INDEPENDENCE" (Schwartz and Ehrenberg). Second state of the map, with "The Lakes Cataraqui" added just north of Lake Ontario; second edition of the text, first issue, without the addition of the R. and J. Dodsley name and address in the imprint. The second edition of Evans's text is virtually a page-for-page resetting of the first edition with sub-titles added on pp. 6 and 11 and the numeral 2 inserted to the left of the signature on the directional line of the first two leaves of each quire. The map was issued both with and without the Analysis, in which Evans carefully acknowledges his sources. Campbell 543; Church 1003; Evans 7412; Hildeburn 1412a; Howes E-226; Miller 606; Pritchard & Taliaferro 34; Sabin 23175; Schwartz & Ehrenberg p.165; Stevens Nuggets I:1019; Streeter sale II:819 (first ed. of the text); The World Encompassed 255; Thomson 384; Winsor V:85.