Thanks to the Internet Archive by way of Blogdowntown I found this high-resolution digitization of some amazing footage of 1940s downtown, apparently filmed for use in some unidentified motion picture. Look close and you might see John Fante (or perhaps even Arturo Bandini) walking around.
The clip is made up of several segments, and is literally the next best thing to actual time travel. As best as I can plot it the car follows this route from 2nd Street to Grand, to 5th Street to Flower and back up to 2nd. I’ve already spent too much time scrolling through it frame by frame just entirely mindblown at the slice-of-life details to be discovered in the people and places and passenger vehicles the camera captures in passing, and invite you to get lost in this record of a long-gone Bunker Hill (best viewed full screen in 1080p) :