Judith Black, a storyteller (she was just at the National Storytelling Festival), has a casette out called "The Home Front" that you should hear. She calls it the flip side of Saving Private Ryan on her web page at storiesalive.com. There is big band music on the tape, but the stories are the focus, of course. She starts with Rosie the Riveter, and goes beyond. This might be more useful in the gift shop than on sound loops in a display, but I think you should hear it. If she makes a west coast tour, you should see it. Her e-mail address is jbtales@storiesalive.com.
As for other sources of inspiration..surely Woody Guthrie wrote something. Do any of your local universities have history departments with oral history projects? Perhaps the Library of Congress has something in the Archive of American Folklife, or at the American Memory website. And its a long shot, but who knows; sending a note to local retirement centers, senior citizen centers, etc. to put on the community bulletin board might get a nibble (I'm thinking more somebody who remembers the music than somebody who plays it). I just checked my library's copy of Encyclopedia of Associations, and I didn't see any groups in there that were directly involved with the home Front, but I'll bet that the Gold Star Mothers and Gold Star Wives associations would have members that did more than raise Victory Gardens. (Sorry I can't provide websites, my edition's a bit too old). There might even be a Home Front Association on the 'web somewhere. Good luck, Mary