Christmas Card, Oh Christmas Card!
Ho! Ho! Ho! My dad was very organized, perhaps even compulsive, about sending Christmas cards. He kept a special list in a ledger with everyone's addresses. The master list had little boxes to checkmark when a card was sent and whether a card was received from such person each year. Not sure exactly what it took to get culled from the master list, but I'm sure the process was more efficient and brutal than culling lists for voter registration. And for many, many years, my par