A friend sent me these--thanks, Dan!
Pictures of our fair city from 1898 through the 1960s, on Imgur.com
I have no idea what Imgur is, but there are 33 photos of things like a Jack In the Box from 1964, or Broadway decorated for Christmas in the 1940s. So enjoy.
To whet your appetite, here are two photos: the first at 3rd and Hill in 1898, the second at 2nd and Hill in the 1950s: