Unknown Author
Sir Walter Scott
Great Britain. War Office.
M. R. Joshi
United States. Army. Corps of Engineers.
Ken Hechler
Herman Haupt
V. Norrman
United States. Congress. House. Committee on Foreign Affairs
United States. Congress. House. Committee on Appropriations
U.S. Army Engineer School.
George W. Cullum
Arthur Penrice Sayer
B. R. Green
Denmark. Krigsministeriet
Nicholas Brooks
Pasley, Charles William Sir
Haupt, Hermann