I believe the first one is correct. The game was played at Wrigley Field in LA, which is where the first article stated the game was at. The second article states Avalon, California (Catalina Island), where the Cubs had Spring Training until the War.
Interesting video on Spring Training on Catalina Island 1939 (no sound).
https://www.youtube.com/watch?v=R2cueKhvN9k
Field is now the location of the Police and Fire Departments of Avalon.
Map where field was right above golf course.
Thanks Bob, I notice you seem to be the man on difficult questions.