occasional papers / the engineer school, united states army Historical sketch of the corps of engineers U.S. Army Safety requirements for excavation, building, construction / War department, Corps of Engineers U.S. Army) Safety requirements for excavation, building, construction / War department, Corps of Engineers U.S. Army professional papers of the corps of engineers, u.s. army Report upon experiments and investigations to develop a system of submarine mines for defending the harbors of the United States / submitted to the Board … annual reports / war department Report of the Chief of Engineers U.S. Army