William F. Fox, Lt. Col. U. S. V., Regimental Losses in the American Civil War, 1861-1865: A Treatise on the extent and nature of the mortuary losses in the Union regiments, with full and exhaustive statistics compiled from the official records on file in the state military bureaus and at Washington

Forty-Second New York Infantry--“Tammany regiment.”

Total enrollment, 1,210, killed, 152, percentage, 12.6.

Present, also, at Seven Days Battles; North Anna; Totopotomoy.

notes.--This regiment was organized by the “Tammany General Committee,” under the patronage of the Tammany Society of New York City. It was mustered in June 22, 1861, and on the 18th of July, following, went to Washington, 1,019 strong. Colonel Kennedy died on the 22d and was succeeded by Colonel Cogswell. The regiment was assigned, October 15, 1861, to Gorman's Brigade, Stone's Division, and was engaged at Ball's Bluff, its first experience under fire, where three of the officers were killed. At Antietam — then in Dana's (3d) Brigade, Sedgwick's (2d) Division, Second Corps--the Forty-second charged with Sedgwick into the woods around the Dunker Church, where it lost 181 out of the 345 who were engaged. At Gettysburg, under command of Colonel Mallon (Hall's Brigade, Gibbon's Division), the regiment took a conspicuous and meritorious part in the repulse of Pickett's charge. Colonel Mallon was an officer of recognized merit and gallantry, and received frequent mention in the official reports of every action in which he was engaged. He was killed at Bristoe Station. During the Wilderness campaign the Forty-second fought in Webb's Brigade, Gibbon's Division, and its depleted ranks were again thinned by the desperate fighting encountered there. The gallant old regiment was mustered out July 13, 1864, its term of enlistment having expired, and such of its members as had reenlisted, together with the recruits, were transferred to the Eighty-second New York. During its entire service it fought in the Second Division of the Second Corps.