Statistics for occurrence #1 of “Appomattox” in chapter 62 of Thomas Wentworth Higginson, Massachusetts in the Army and Navy during the war of 1861-1865, vol. 1, Condensed history of regiments.:
...ne 23.
The regiment took part in the final operations about Petersburg in March and April, 1865, was active in the pursuit of the Confederates, and present at the surrender of General Lee's Army at Appomattox .
At the close of the campaign the regiment was stationed at Washington until its return to Massachusetts and its discharge, July 14, 1865.
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