Not the original Disneyland dark rides, but I've just been informed of several instances of on-ride footage of WDW's Toad and Snow White rides, which appear in this video at 30:00 and 37:09 respectively:
What makes these unique is the fact that they were recorded on consumer-grade film in 1972. Previously, I had just assumed that any attempt to record one of the Fantasyland dark rides in the days before videotape would have resulted in an indecipherable, pitch-black waste of film, but apparently that wasn't necessarily the case. These recordings actually capture the ultraviolet light somehow, and even if they're extremely fuzzy and feature almost no color except dark blue, you can still generally tell what's going on in them.
I'm posting this here because it's incredibly interesting to see what an actual recording of one of the original 1950s California dark rides would theoretically look like. At least we know that it's technically possible that one could exist now.