Dear Ms. Kafer:
As you may have heard, things have changed since that image of Pharaoh Queen Hatshepsut was obliterated from ancient Egyptian stone.
Reliable backups were hard to come by in ancient Rome, too, so no doubt the stories of many notables of the time really are lost forever because of those damn damnatio memoriae decrees.
You really don’t need to worry about Christopher Columbus, though. When Columbus Day inevitably gets replaced, the story of how he bumped into a tiny piece of the New World – long after many others did – will live on at least as long as our data centers and power supplies last.
After that, no one will care.
P.S. I agree that “Colorado Day” is bland and meaningless, and I guarantee it would never catch on nationally. Let’s call it Monday until we come up with something better.