This 1930s Wives' Guide To Undressing Will Make You Happy To Live In The 21st Century

“Many a marriage ends in divorce court because the wife grows sloppy and careless in the bedroom.”

LIFE magazine did a semi-instructional spread on the class before its debut, remarking, "Such good bedroom manners are essential to married happiness once the honeymoon is over."

Allen Gilbert and "professor" June St. Clair.

Peter Stackpole/The LIFE Images Collection / Via Getty

Gilbert claimed 48 women signed up for the six-class course, and each paid $30. That's equivalent to about $500 now.

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