Here's a bit of Mad-Men-era fun: a page from a 1960 employment manual for Argonne National Laboratory (ANL), courtesy of Kawtar Hafidi
and ANL's wisttalk mailing list, on which I lurk. (I hope they don't throw me off the list when they see this.) Employees, the manual states, are allowed to work overtime, but if they expect to work more than 60 hours in a week, they'll need to make arrangements with the Business Manager's office first. That's the rule for employees.
Having laid out the rules for employees, the manual moves on to a separate category, female
employees. Read on, and click on the image below to view a larger, easier-to-read version:
I'd love to know how many women Argonne employed on the scientific staff in 1960 and what working there (or at any national lab) was like for them.