I am only in my early 40s so young and sprightly.
When I was even younger I had a job in a dentists office. Basically sending reminder letters out, printjng the letters, and addressing the envelopes. The dental records didn't have title on them so I asked what I should do. The response was i a woman's husband is also registered at the practice, she's a Mrs.
So I did that. Mrs for those respectable married women, and using my teenage innovation I decided any where I was unsure would be 'Ms'.
I got such a telling off. Apparently people complained as it looked like they were divorced.
There are times when the 90s seem only yesterday, and times like remembering that when they seem to have more in common with the victorian era than the present day!