Luebke, Frederick C. Bonds of Loyalty: German Americans During World War I. 1974
Wittke, Carl Frederick. The German-Language Press in America. 1957
Tischauser, Leslie V. The Burden of Ethnicity: The German Question in Chicago, 1914–1941. 1990
Hawgood, John. The Tragedy of German-America. New York, Arno Press 1970 (c1940)
Tolzmann, Don H., ed. German Americans in the World Wars, 2 vols. Munich, Germany: K.G. Saur, 1995
Silence Broken, Pardons Granted 88 Years After Crimes of Sedition - New York Times 2007
"GERMAN ENEMY OF U.S. HANGED BY MOB", St. Louis Globe-Democrat (April 5, 1918)
Schwartz, E.A. "The lynching of Robert Prager, the United Mine Workers, and the problems of patriotism in 1918". Journal of
the Illinois State Historical Society
German American Internee Coalition
Sonntag, Mark.  1994.  “Fighting Everything German in Texas. 1917-1919.”  
Burbank, Garin.  1976.  When Farmers Voted Red:  The Gospel of Socialism in the Oklahoma Countryside, 1910-1924
Cornebise, Alfred. 1984.  War as Advertised: The Four Minute Men and America's Crusade, 1917-1918.  Philadelphia
Buenker, John D.  The History of Wisconsin. Volume IV The Progressive Era  1893–1914  1998
Burgchardt, Carl R.  Robert M. La Follette, Sr.: The Voice of Conscience  Greenwood Press 1992
Davenport (Iowa) Democrat & Leader April 29, 1918 P.10, May 8, 1918 P.15, April 24, 1918 P.10, May 2, 1918 P.12,
May 8,
1918, April 22, 1918, May 7, 1918 P.12, May 8, 1918 P.4, May 7, 1918 P.7
Keller, Phyllis. German-America and the First World War. Diss. U Pennsylvania,1969. Ann Arbor: UMI, 1985.
Kazal, Russell A. Becoming Old Stock: The Paradox of German-American Identity Princeton University Press 2004
Cruttwell, Charles Robert/Mowbray, Fraser  A History of the Great War, 1914–1918. 2007
Eksteins Modris   Rites of Spring: The Great War and the Birth of the Modern Age.1989
Rippley,  La Vern J.  The German-Americans.   Twayne Publishers 1976
Falls Cyril   The Great War. 1960
Hardach Gerd   The First World War 1914–1918.  1977
Whalen, Robert W. "Bitter Wounds: German Victims of the Great War, 1914-1939." Ithica 1982
Daily Utah Chronicle (2002-11-11) "Tragedy Finds Resting Place in Fort Douglas".
Sources and Recommended Reading