Thank you all for the helpful information.
Mike--in all the pictures I could find, I never saw a smaller square pan, so it's probably correct that it came from something else. Also, thanks for the link to the video, it was fun to watch.
Launderess and Mike--those are great ideas about adding some insulation. Better to be safe than sorry. While I think both my husband and I have common sense, we are both a bit klutzy, so that extra protection may help prevent some inadvertent burns!
Joe--will try and cook something in it this weekend and give a report on the results.
The person we brought it from was the original owner, and he said he and his wife used it often, and that it cooked a mean cornbread. He was prior military, and he and his wife collected stuff from their travels all over the world. Upon retirement, they realized they had way too much stuff, so decided to empty their storage units and open a thrift/antique store to help get rid of some of it. I bought a vintage beehive hair dryer from them also (turquoise of course).