This collection contains the diary of Jacob Cohn, a soldier in Company A, 54th Pennsylvania Infantry during the American Civil War. Cohn's brief entries commence with April 14, 1864 and trace his regiment's movements and battles, particularly those at New Market and Piedmont. The entries cease with June 18, 1864, and are followed by the names of Company A's soldiers wounded and killed at the Battle of New Market. The diary also contains various lists of goods and prices, some dated June-September 1863.