Image: apparently a snapshot with no information.
The famous Hollywood sign was to be sometime in the future. In 1939 it was showing the full name of the real estate development. This photo was probably shot from the parking lot of the Griffith Park observatory.
Image and excerpt via http://www.glamoursplash.com/2014/04/rip-mickey-rooney.html .
“Mickey Rooney goes off the diving board, as Marjorie Gestring gives him a push, during Judy Garland’s birthday party at Louis B. Mayer’s Santa Monica beach home. Judy Garland, June Preisser, Jackie Cooper, and Virginia Weidler sit (L to R) behind them on the board. On the edge of the pool is Ann Rutherford.
“Judy turned 17 on this day, June 13, 1939.”
Garland is sitting on the diving board just to the right of Gestring.
Image: Life magazine photo by Peter Stackpole via https://blog.johannaost.com/2012/08/01/lana-turner-in-hollywood .
This appears to be in southern California based on the Los Angeles city style streetlights. Click on the image link to see more 1939-1940 photos of the actress.
Glamour of Hollywood magazine published volume one, number one in 1939.