It's been over 50 years, but Wayne Ritchie says he can still remember how it felt to be dosed with acid.
He was drinking bourbon and soda with other federal officers at a holiday party in 1957 at the U.S. Post Office Building on Seventh and Mission streets. They were cracking jokes and swapping stories when, suddenly, the room began to spin. The red and green lights on the Christmas tree in the corner spiraled wildly. Ritchie's body temperature rose. His gaze fixed on the dizzying colors around him.