[HossC]

Thanks for the corrections, GW. I read my old map too hastily to notice the street was just "Angeles Mesa Drive" (no "Los"). When I saw the brickwork on the building I posted, I assumed it was a messed around version of the one posted by Godzilla, but thinking of it as a virtual mirror of the one across the street (the one in Godzilla's post) makes more sense of the proportions.

I've tried looking at various old aerials to find when 5400 was torn down. It's still there in 1980 according to Historic Aerials, but the 1994 image on Google Earth is too blurry to tell for sure. It's definitely gone by the 2001 image on Google Earth.