Family correspondence relating chiefly to Wentworth's service in the 37th Massachusetts Infantry Regiment; copies of articles, satire, doggerel, and poetry submitted for inclusion in The Reveille, a handwritten newspaper issued by his regiment at Brandy Station, Va. in March 1864; and photographs. In his letters Wentworth describes life in the military, his feelings before and during battle, and the actions of his regiment at the battles of Fredericksburg, Gettysburg, and Kelly's Ford, Va., and other campaigns of the Army of the Potomac. Letters after Wentworth's death pertain to a pension for his widow and children.