1. Section of G. Woolworth Colton's New guide map of the United States and Canada, with railroads, counties, etc. 1863 : used by General Grant in marking the proposed lines of operations of the armies of the United States, in 1864 Maps Pennsylvania State University Public content 1863. Colton, G. Woolworth (George Woolworth), 1827-1901. Scale 1:3,168,000. Statute miles, 50 to one inch; maps: color; 42 x 69 cm Railroads--Southern States--Maps.