Over 1,500 titles from an estimated 5000 total at the U.S. Army Military History Institute at Carlisle Barracks in Pennsylvania.  "... this microfiche collection has attempted a comprehensive filming of all ... monographic histories listed in C.E. Dornbusch's Military Bibliography of the Civil War, Volumes I and II ... In order to preserve the subject and organizational integrity ... individual volumes from larger sets were generally avoided, as were monographs which only dwelt in small part with the Civil War experience."  Guide, unit 1, p. i