Visitors, Harpers Ferry, West Virginia Harpers Ferry National Historical ParkEdward R. O'Brien Family w/ J.R. Prentice. Kaplon Lot. Billionth Visitor. Original caption: NHF 2080, Edward R. O'Brien Family w/ J.R. Prentice, Kaplon Lot, Billionth Visitor Day, A. L. Sullivan, Aug. 22, 1962.
Visitors, Harpers Ferry, West Virginia Harpers Ferry National Historical ParkEdward R. O'Brien Family w/ J.R. Prentice. Kaplon Lot. Billionth Visitor Day. Original caption: NHF 2081, Edward R. O'Brien Family w/ J.R. Prentice, Kaplon Lot, Billionth Visitor Day, A. L. Sullivan, Aug. 22, 1962.
Letter, 1863 September 22, James Wallace to Brooks, regarding Parrott guns that failed [Verso]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.