I just found this photo in the archive. I don't remember seeing it before.
(actually, several of the photos I just posted above I believe are new to the archive)
USC caption: "A view of Fort Moore Hill looking northeast from 1st & Hill Street, ca. 1875"
usc digital archive
This is a great photo. Beside showing Los Angeles High School atop the hill, you can clearly see the cupola of the original City Hall.