I'm still reading through the whole topic, but it's growing so fast that I barely can keep up! I'm like only half way through, somewhere around 2012. Anyway, I found these photos online and I hope they are not posted yet, if so, I'm sorry! For some of them I made a comparison with recent Google images.
City Hall at night, Los Angeles, 1961
Source: digitallibrary.usc.edu
Crowds at the Hollywood Bowl, 1940
Source: digitallibrary.usc.edu
Greenleaf Ave, Whittier, California, 1907
Source: oac.cdlib.org
Christmas trees, South Flower Street, Los Angeles, 1928
Source: digitallibrary.usc.edu
Whittier Boulevard & California Avenue, Montebello, 1934
Source: digitallibrary.usc.edu
Rainy day, Ventura & Woodman, Sherman Oaks, California, March 15, 1952
Source: digitallibrary.usc.edu
Main Street between Sixth & Seventh, Los Angeles, 1941
Source: digitallibrary.usc.edu
Tom Breneman's restaurant, Hollywood, 1948
Source: digitallibrary.usc.edu