These are still in use on some circles. When I was young, my parents sent me to a thing called Cotillion. It was a sort of evening camp for young people wher

These are still in use on some circles. When I was young, my parents sent me to a thing called Cotillion. It was a sort of evening camp for young people where we learned table manners, ballroom dancing, and ettiquite. Calling cards were part of the deal. A proper host had a special tray for them near the entrance for people to leave theirs.