Lewis Gruber Diary 1861-1862. (ZAK), University of Notre Dame Archives (UNDA), Notre Dame, IN 46556
Pocket diary of Gruber, dating from his enlistment at Delphi, Indiana, 3 August 1861, to his discharge, 11 July 1862.
A private in Company A, 9th Indiana Infantry, Gruber served in West Virginia in 1861; he then served under Buell until he was wounded at Shiloh.