Description Field of Gettysburg, July 1st, 2nd & 3rd, 1863 Prepared by T. Ditterline.[Philada. P. S. Duval & Son lith. 1863]Scale ca. 1:25,500,. Reference: LC Civil War Maps (2nd ed.), 331 From his Sketch of the battles of Gettysburg . . . New York, C. A. Alvord, 1863. 24 p. Oval-shaped map depicting troop and artillery positions, relief by hachures, drainage, roads, railroads, and houses with names of residents. The map shows Gettysburg and environs in a scaled oval, with green shaded areas denoting woods and troop placement in blue (Union) and red (Confederate), along with the town and all principal roads. Originally printed in the same year as the battle, and believed to be the FIRST published map of the historic confrontation that most scholars describe as the beginning of the end of the Confederacy. Little is known of the artist/cartographer, Ditterline.