Via Mark Evanier’s News From Me:

It’s a never-broadcast promotional film for Desilu Studios, from back in the days when Desi Arnaz and Lucille Ball owned half the television industry. Westinghouse was one of their biggest sponsors so Desi and Lucy starred in this tour of their operation that was designed to show appliance dealers how Westinghouse was going to be selling washing machines like crazy. I think this was done in early 1958 and it runs a little less than half an hour. It’s been posted to YouTube in three parts and they should play, one after the other, in the window I’ve embedded below.