I recently bought a copy of San Francisco's Sunset District, by Lorri Ungaretti. It is full of historic photos. The one that I find most amazing is of 19th Avenue when it was a dirt road. I was also shocked to see a photo of "Bea" Lassiter when she owned Polly Ann Ice Cream. I've been acquainted with her for years and had no idea. Here's a story about Polly Ann, by the way.
I learned quite a bit of the history of the Sunset. But the photos are the highlight. One of the things I like to do is picture intersections as they were 50, 75, or 100 years ago. Now I can take my copy of the book out on my walks.
If you decide to order one, why not get it from The Western Neighborhoods Project?