01252cpcaa2200289 a 4500 mm 82045914 DLC 20260227111715.0 820519|||||||||||| eng mm 82045914 DLC dacs DLC DLC W lcmd United States. Army. Office of the Chief of Engineers. United States. Army. Office of the Chief of Engineers letterpress book, 1862-1865. 1 volume. 1 container. 0.1 linear feet. Open to research. Letterpress book containing copies of letters (1862 May 9-1865 June 8) sent by Edward Frost and other engineers, Office of Engineers, responsible for defenses of Washington, D.C., south of the Potomac River. Collection material in English. Fortification Washington (D.C.) Potomac River Valley History Civil War, 1861-1865. United States History Civil War, 1861-1865. Washington (D.C.) History Civil War, 1861-1865. Frost, Edward (Engineer) 43614 43614