I went to grade school 75 years ago. They were all old maids, poor dears. They worked hard and taught us well. They loved us , the boys and the girls. Iam sad they could not find husbands during the depression, because the men could not find work.
Given the time frame, it's also possible that many of those women might have had boyfriends or fiances who had died in the First World War, and they never found someone else.