This is a pretty spectacular aerial shot of the Griffith Park Observatory while it was being built. Construction started in June 1933 so I place this photo circa early 1934. From this angle, the Greek Theater (opened September 1930) really stands out against the empty land of Mt. Hollywood and Griffith Park. It’s also interesting to see the view from the observatory looks out over largely undeveloped land that’s now carpeted with urban sprawl.