Lately I've been into buying vintage postcards--some to sell, others I can't bear to part with. Some of my favorites are, well, steamy. These have been hard to find--haven't seen a vendor yet with "steampunk" or "future past" as a category, but hidden in with "buildings" and "airplanes" were these three gems.
The oldest, the flying contraption above, was mailed in 1910 from Lincoln, Illinois, with a request to "meet us at the tram." The next one, titled "Future New York," was mailed from Brooklyn to Germany in 1925. Finally--one I bought just last weekend--the blimp over Midtown in New York, was mailed in 1933.
I love that in with all the postcards of monkeys wearing suits and creepy Victorian children are these remnants of some artist's vision of the future.