I found Richard Osborne's book : World War II Sites in the Unites States to be informative. A quick check found Santa Ana Army Air Base near Costa Mesa CA;Fresno CA. Fresno and Pinedale Assembly Centers, Camp Pinedale, Fresno Ground Training Center, Hammer Field; Amarillo Texas: Army Air Field; South Carolina, Columbia Army Air Base and Colunbia Municipal Airport. Although it appears that not all locations are listed for every site, those listed have a brief but concise description of its' involvement during the war years ( and some later). Good luck in your research.