We've got some more mid-century architecture from Julius Shulman today. This is
"Job 623: International Union of Operating Engineers, 1949".
A view of the side.
Both from
Getty Research Institute
I can't read the street sign in the first picture, but the 1956 CD led me to 2323 W 8th Street. The 2009 GSV images show the building as the Gu Sung Medical Clinic.
GSV
Sadly, the 2011 image shows an empty lot. Now you'll just find the wall of a playground, possibly connected with the MacArthur Park Primary Center at the northern end of the block.
GSV