My grandfather told us when he was a boy, in the early 1900's, there was always a short film before the feature film on a Saturday. In this short film predictions were made about how technology would advance. Things like landing on the moon, air travel and microwave ovens for example. How would I go about finding these old films? Is there an old film archive out there somewhere?

He was always going on about it, ticking off each one as it came true. I'd love to be able to see what he saw and how many have come true since my grandfather died in 1983. Any help would be appreciated....