There's a bit more info here on Las Colinas Heights / Outpost Estates ( w/ the fella on the sign IDed as "Elmer" in a caption, but it looks like two different fellas to me).
https://www.kcet.org/departures-colu...-of-mythmaking
The Outpost Homeowners' Association site has a good "history" page.
Lots of pix:
http://www.outpostestates.com/
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Also, that's the Wilshire Royale across Rampart Blvd from the side entrance of the Bryson. I'm sorry, I don't know what restaurant was there in the 40s, but someone here will know. HOLA, a service organization, seems to have that space now.
Both the Bryson's neon and the restaurant blade sign are gone:
gsv