Statistics for occurrence #1 of “Jack B. Long” in chapter 5, page 65 of The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Volume 5: Forts and Artillery.:

...engagements and two notable battles — Mill Springs, or Fishing Creek, and Shiloh. The officers here shown from left to right, starting with the upper row are: Frank Johnson, George W. Trabui, Jack B. Long , James C. Wheeler, E. T. Falconet, A. M. Rutledge, Joe E. Harris, George E. Purvis, J. P. Humphrey, J. Griffith, and M. S. Cockrill. Three of the officers in this picture — Falconet, Rutledge, ...
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