Have you visited the US Army Military History Institute, Carlisle Barracks, Pa?

Here are a few items in their collections which may be of interest.

George Martin

Winkler, Angelina V. The Confederate Capital and Hood's Texas Brigade. Austin, TX: E. Von
Voeckmann, l894. 312 p. E580.4H6W55.

The following pertinent personal papers are in the Institute's Manuscript Archive:

Horn, R.E. - LeighColl Bk l7: 24 (Pvt's letter, Mar 24, 1862)

Lowry, Robert J. - BrakeColl (Pvt's diary, Jun 4-Aug 18, 1863)