This is an automated archive made by the Lemmit Bot.

The original was posted on /r/todayilearned by /u/South_Gas626 on 2025-08-06 15:17:53+00:00.

Original Title: TIL in 1866, Congress meant to put explorer William Clark on a 5¢ bill, but a last-name mix-up led Treasury Official Spencer Clark to put himself on it. This resulted in Congress passing an amendment that banned living people from appearing on U.S. currency.