Download the PDF: Mass-12th-Vol-Inf.pdf
Five companies were raised in Boston and one each in Abington, North Bridgewater, Gloucester, Stoughton, and Weymouth. On June 26, Col. Webster and a large majority of the officers and men of the regiment were mustered into the service. The regiment left Fort Warren for the seat of war July 23, and on the 27th it reached Sandy Hook, Md., near Harper's Ferry.

- Courtesy of Massachusetts Archives
Primary Source*
*The original telegraph orders to move the Webster Regiment to Washington DC.