|The lower drawing is where the army was upon Col. Lyman's (TL) arrival by train.|
"A" Drawing is the army placement on the 13th.
On Sept 2, TL was in Washington staying at Willard's awaiting the boat to Alexandria. From Alexandria he boarded a train which took him to the vicinity of the HQ. From the railroad the ride was about 2 1/2 miles on horseback. There he reported in and was invited to mess with Gen. Meade, and Gen. Humphreys.