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Source: U. S. Army Heritage and Education Center
(formerly the U. S. Army Military History Institute)
U.S. Army Military History Institute
Collections Division
950 Soldiers Drive
Carlisle Barracks, PA 17013-5021
21 Mar 08Bates, Samuel P. History of the Pennsylvania Volunteers, 1861-5. Wilmington, NC: Broadfoot, 1993.  Vol. 7, pp. 351-77 (14 photocopied pages). E527B32.1993v6. (Brief history and roster of the regiment).
Dyer, Frederick H. A Compendium of the War of the Rebellion. Vol. 2. Dayton, OH:  Morningside, 1979.  E491D992. See p. 1615-16 (2 photocopied pages) for a concise summary of the regiment’s service.
Harrold, John. Libby, Andersonville, Florence: The Capture, Imprisonment, Escape and Rescue of….Phila: Selheimer, 1870. 132 p. E611N32.
Lewis, Osceola. History of the One Hundred and thirty-eighth Regiment, Pennsylvania Volunteer Infantry. Norristown, PA: Wills, Iredell & Jenkins, l866. 198 p. E527.5.138th.L48.
Lowry, Thomas P. Curmudgeons, Drunkards, and Outright Fools: Courts-Martial of Civil War Union Colonels. Lincoln, NE: U NE, 2003. 258 p. KF7641L69. See pp. 116-20 on the court martial of COL Charles S. Summalt.
Mauk, John W. “The Man Who Killed General A. P. Hill, Statement of Mr. Mauk, Who Says he Fired the Fatal Shot.” Southern Historical Society Papers 20 (1892): pp. 349-51 (2 photocopied pages). E483.7S76v20.
Sauers, Richard A. Advance the Colors!:  Pennsylvania Civil War Battle Flags.  Vol. 2.  Hbg, PA:  Capitol Preservation Comm, 1991. pp. 420-22 (3 photocopied pages).  E527.4S38.1991v2. (Brief unit history with emphasis on the regimental flags).
Our Photo Archive includes images of individuals of this unit.
The following pertinent personal papers are in the Institute’s Manuscript Archive:
Callahan, George W. – Papers (Sergeant’s diary, Jan l – Aug 10, 1865)
Davis, James W. – CWMiscColl (Enlisted man’s diary, 1864)
Essick, J. E. – CWMiscColl (Officer’s diary, Jan 1-1May 2, 1864)
Fisher, Benjamin F. – Papers (General officer’s papers and letters, May 12, 1862-Dec 18, 1865)
Herman, David – CWMiscColl (Enlisted man’s diary, Jan 1-Dec 31, 1864)
Leivelsberger, Jacob C. – CWMiscColl (Officer’s transcribed diary and papers, Jun 13-Dec 31, 1863)
Lowery, John E. – HCWRTColl (Enlisted man’s diary, Jan l, 1863-Nov 28, 1863)
Roberts, Frank – HCWRTColl-DanielsColl (Enlisted man’s letters, Mar 1, Mar 28, Jun 8, 1863)
Salsburg, Samuel B. – CWMiscColl (Enlisted man’s letters, Jun 18, 1864)
Server, Mathias T. – CWMiscColl (First Sergeant’s papers, Jun 23, 1865)
Simpson, James R. – CWMiscColl (Enlisted men, sergeant, and officer’s transcribed letters and papers, June 13, 1861-1Sep 4, 1866)
Wood, Joshua – HCWRTColl-DanielsColl (Enlisted man’s letters and papers, 1863-1864)