[Flyingwedge]

Originally Posted by HossC

LAPL date their shot as circa 1890. Here's part of an 1894 map which Diamond-X linked to recently. The only possible structure I can see is the one I've arrowed at the corner of Third and Beaudry. There's nothing at that location on the 1910 Baist map, and the nearby Magalia Apartments at 1010 W 3rd Street don't appear in the CDs until 1910. The "street above the mystery structure" could be Crown Hill Avenue, now part of W 3rd Street.
For reference: Bunker Hill Avenue is in the middle of the right-hand side, and #24 in the center is the Fremont Avenue School.


Detail of map at Library of Congress

Thanks, Hoss. I bet you're right.