I don't think we've seen these views of Union Station and the Civic Center before. They're both from 4x5 negatives, and the description of one says
"Original vintage negative from the late 1950's. Taken by Don Comoe who was the official photographer at Naval Air Station at Los Alamitos, CA." The seller had posted the images back to front, hence the mirrored watermark when I corrected them. I've also played with the levels to try and even them out.
eBay
eBay
The area in the foreground has been discussed a couple of times recently:
The bridge over Macy Street
Housing tract around Rosabell Street