Survey map and profile of part of Pennsylvania and Maryland from Gettysburg to the Potomac River. Shows relief by hachures along the line, creeks, roads, cities and towns. Chartered on January 9, 1838; constructed December 1, 1858.
Regional view shows paths taken by different segments of the Union army on a march from Frederick, Md., to Gettysburg, Pa., as well as the location of the Confederate army units in the vicinity. The Union troops were under the commands of Reynolds, Howard, Sickles, Slocum, Hancock, Sykes and Gregg.