At Archive.org I found a textbook titled, "The School Lunch" by Marion Louise Cronan, published in 1962. It is a textbook about how to set up and run a school cafeteria. It includes recipes. School cafeteria recipes start on page 343.
Here is a link to where you can read the textbook online or download it in PDF format.
Here's a direct link to the online book.
There are not any great recipes, but it is interesting. Maybe someone will find some comfort food from the past.
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