Alex, the Omaha Weird Herald has Estate Sales listed all over the place - depending upon what section the purchaser instructs the ad to placed. You can do a search of the "Marketplace" ads for "Estate Sale" but that doesn't guarantee all will come up. They have recently changed their website and it's organization and sorting functions are a bit lacking. Then, there's the sale companies that don't even call them estate sales which complicates the searching even more!
Tom, the Hotpoint at the sale did have two ovens, but I can't remember if the elements were hidden. Seems we've come full-circle in the hidden element feature, perhaps the engineers and feature-dreamers should visit a junkyard and have a peek inside some of these old appliances - there would be much to be learned!