Data from experiments on sand, sand bags, etc. and work relating to siege works, Morris Island, July-September 1863National Park ServiceTables of data from experiments measuring weights of dry and wet sand, data showing penetration of Sharps, Enfields, and Spencer Rifles and Coehorn mortar shells into materials such as sand bags, sand bags filled with cotton, fascines, and pine. Also contains tables of data showing how much dirt can be dug by men in a period of time.
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.
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.
Letter, 1863 September 22, James Wallace to Brooks, regarding Parrott guns that failed, page 2National 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.
Letter, 1893 July 22, Joseph Trapnell (Charles Town, W.VA.) to Thomas H. Savery [Verso]Harpers Ferry National Historical Park; National Park ServiceA sheet of plain blue paper, apparently originally from a pad, with letterhead printed in black- law office of Joseph Trapnell, Charles Town, WV. July 22, 1893. It contains a letter written in black in transmitting papers relating to the title to land on Virginius Island. The paper is creased by 3 horizontal folds. The center panel of the reverse has in ink- Mr. Savery. Some of the padding compound from the top edge has adhered to the reverse along the lower crease.