Below are some links to help get you started. You are not limited to using them... in fact, you shouldn't only use these... (if any of these links are broken, just move on to the next and/or find your own...)
America from the Great Depression to World War II - American Memory
National Archives: Powers of Persuasion - Poster Art from WWII
An Overview of World War II Japanese American Relocation Sites
World War II Poster Collection - Northwestern University Library
Historic Government Documents from World War II - SMU Library
Voices from World War II: Experiences from the Front and at Home (UMKC Library)