I found this excerpt from the July 1943 issue of Transportation Magazine; a guide to hiring women to solve the manpower shortage. It contains eleven ‘helpful’ tips on selecting the most efficient women. Diversity recruiting in the old days…

1943 Guide to Hiring Women:

There’s no longer any question whether transit companies should hire women for jobs formerly held by men. The draft and manpower shortage has settled that point. The important things now are to select the most efficient women available and how to use them to the best advantage. Here are eleven helpful tips on the subject from western properties:

1. If you can get them, pick young married women. They have these advantages, according to the reports of western companies: they usually have more of a sense of responsibility than do their unmarried sisters;  they’re less likely to be flirtatious; as a rule, they need the work or they wouldn’t be doing it — maybe a sick husband or one who’s in the army; they still have the pep and interest to work hard and to deal with the public efficiently.

2. When you have to use older women, try to get ones who have worked outside the home at some time in their lives. Most transportation companies have found that older women who have never contacted the public, have a hard time adapting themselves, are inclined to be cantankerous and fussy. It’s always well to impress upon older women the importance of friendliness and courtesy.

3. While there are exceptions, of course, to this rule, general experience indicates that “husky” girls – those who are just a little on the heavy side – are likely to be more even-tempered and efficient than their underweight sisters.

4. Retain a physician to give each woman you hire a special physical examination – one covering female conditions. This step not only protects the property against the possibilities of lawsuit but also reveals whether the employee-to-be has any female weaknesses which would make her mentally or physically unfit for the job. Transit companies that follow this practice report a surprising number of women turned down for nervous disorders.

5. Stress at the outset the importance of time the fact that a minute or two lost here and there makes serious inroads on schedules. Until this point is gotten across, service is likely to be slowed up.
11 Tips On Getting More Efficiency Out Of Women Employees