Southern California, of course! From the USC archives.
"Fuzzy Pink Nightgown" Beauty Contest, 1957
"If I Were Rich" players (quintuplets), Southern California, 1927
["quintuplets" means there should be five...I only count four]
"Manya" using Racine inner tube for exercise, Bershon Tire, Southern California, 1928
"Party Daze" week ends with "Beachcomber's Day" at Harbor Junior College, 1953
[holding a beachcomber party indoors in southern California seems a bit weird]
"Skipperettes" for Fishermen's Fiesta (San Pedro), 1951
"Stars" at Exposition Park playground for Christmas festival, Los Angeles, CA, 1930
"Stars" at Exposition Park playground for Christmas festival, Los Angeles, CA, 1930
"You Auto Buy Now" week campaign, 1958
[I'm not 100% certain but I think the blonde lady may be Jayne Mansfield]
The final four are from an ad campaign from 1931, called "Come out of the kitchen". Not sure what they were selling...