Detailed descriptions and photographs of historic buildings and structures. Part 2 of Volume 3 (Buildings 42-64, rev. 1, October 2008) includes:

• Building 56 (Guardhouse, 1896)
• Building 57 (Drill Hall and Gymnasium, also called Raymond Hall, 1909)
• Building 58 (Barracks, 1932)
• Building 59 (Barracks, also called Barrett Hall, 1939)
• Building 60 (Barracks, 1930)
• Building 61 (Barracks, 1909)
• Building 62 (Barracks, 1909)
• Building 63 (Barracks, 1906)
• Building 64 (Barracks, 1908)

Michael A. Cavanaugh, who is preparing a history of Fort Slocum, refers to Buildings 58 to 60 collectively as the “Trivium” and calls Buildings 61 to 64 the “Quadrivium.” All buildings in this part were located in the Barracks Area.