"The Battle of Jutland. Bergen, the official marine painter to Kaiser Wilhelm, witnessed the largest..." Europe Since 1914: Encyclopedia of the Age of War and Reconstruction, edited by John Merriman and Jay Winter, vol. 1, Charles Scribner's Sons, 2006.
"World War I and America" (Overview) from U.S. History in Context
"African Americans in World War I" (Overview) from U.S. History in Context
"Women in World War I" (Overview) from U.S. History in Context
"Germany, 1789-1945" (Overview) from World History in Context
"World War I" (Overview) from World History in Context
"Russian Revolution" (Overview) from World History in Context
"World War I Sports" by S.W. Pope from America at War via US History in Context
"An Avro 504k WWI bomber." Gale Encyclopedia of World History: War, vol. 2, Gale, 2008.
