Rick, That is what I had guessed, Thanks. Do you, (or anyone else), happen to know approx. what year commercial refrigeration appeared? How about home refrig/freezers? There must have been one year when rich people got them, and another year for everyone else?
How about air conditioning? Home/office/car? I cannot imagine what it was like on a train full of people or an airliner w/o A/C.
