What U.S. president regularly took a morning skinny-dip in the Potomac, and reportedly once had his clothes onshore stolen?

According to sources, Pres. John Quincy Adams liked to go skinny dipping in the Potomac. He regularly swims at around 5 AM.
Updated on Monday, February 06 2012 at 05:44PM EST
Source: www.ipl.org/...
Collections: potomacu.s. presidentclothing