Here are some Junior League Cookbooks you can read online or download individual PDF pages:
Los Angeles Junior League Cookbook - 1930
https://babel.hathitrust.org/cgi/pt?id=uc1.31822035086289;view=1up;seq=1
Junior League Cookbook of Montgomery, Alabama - about 1940
https://archive.org/stream/southernrecipes00junirich#page/n5/mode/2up
Here are some Junior League Cookbooks you can read online or download individual PDF pages:
The Gasparilla cookbook. With illus. by Lamar Sparkman.
by Junior League of Tampa.
Published 1961
https://babel.hathitrust.org/cgi/pt?id=inu.39000003578742;view=1up;seq=1