What's bizarre is the three kids don't look quite right. Is that me, Liz, and Mike? I can't figure out why three other kids would be on the front of a postcard, but if that's us, I don't remember any family photos with those haircuts.
ETA: I think that's Jody Fletcher and Rene Bell with Liz on the right. Jody and Rene's parents worked for us.