PBS
The War: At Home: War Production
From the extensive PBS site on World War II, you can read about the mobilization of American industry in support of the U.S. troops in World War II. Find out why not only industry was changed, but how the mobilization affected society....
US Army Center
U.s. Army Center of Military History: Mobilization in World War Ii
This site from the US Army describes steps taken in the United States to prepare for war. Scroll through to see how the United States mobilized for World War II.