Instruments Used. Schmalcalder Compass, Odometer and Tape Measure, Time 5 days. ; Note. Part not covered by Topography compiled from Campaign Maps of the Army of the Potomac and Rebel Map D.N.V. ; Tape-men, Flag-men, Scouts and Escorts detailed by Bvt. Maj. E.A. Flint, comd'dg. Squadron of 1st Mass. Vet. Vol. Cavalry
Atlas to accompany the official records of the Union and Confederate armies. Vol. 40, pt. 1.