World War 1
Worldwar1.com: Trenches on the Web: Armory: Gas Warfare
Detailed information on the use of chemicals as weapons during WWI. Includes images of soldiers wearing gas masks, an extensive list of chemicals and their effects, and links to further information on the Second Battle of Ypres and to...
Library of Congress
Loc: A Guide to World War I Materials
A web guide of links to World War I resources throughout the Library of Congress web site and beyond.