Building 45, new summer beam from room 2Harpers Ferry National Historical ParkNew Summer beam from room # 2 looking toward room # 7. Bldg. 45. Construction Progress. Original caption: NHF 2073, New Sommer Beam From Room #2 Looking Toward Room #45, Bldg. 45, Construction Progress, A. L. Sullivan, Aug. 22, 1962.
Letter, 1863 September 22, James Wallace to Brooks, regarding Parrott guns that failed [Recto]National Park ServiceLetter to Brooks from James Baldwin, reporting results of Baldwin's examination of the 100 and 200 Pdr Parrott guns that failed during the bombardment of Ft. Sumter. The number of rounds at which guns failed, signs of crystallization, cracks, and fractures in the guns are detailed.