Author
Beers, Henry Putney, 1907-
2
United States. National Archives and Records Administration
2
Abbot, George Maurice
1
Cheney, James W. 1849-1917
1
Cole, Garold
1
Greely, A. W. 1844-1935
1
Historical Society of Pennsylvania
1
Lawrence, Samuel C. 1832-1911
1
Library of Congress. Map Division
1
Moebs, Thomas Truxtun
1
Munden, Kenneth W.
1
Nettling, Dan A.
1
Rolph, Daniel N., 1953-
1
Schweitzer, George Keene, 1924-
1
Stephenson, Richard W., 1930-
1
US Army Military History Institute
1
United States. War Department. Library
1
Welsh, Jack D., 1928-2012
1