Fritz told the WC that "an officer" whose name he couldn't remember stopped him out in the hall before he went in to interview Oswald for the first time, and told him that Oswald lived on Beckley.
What if he made that up?
Sheriff Decker's file on the assassination, given to the Warren Commission lists the assailant's name as "Harvey Lee Oswald"
(12H51) (CE 5323) Deposition of Sheriff Decker dark brown heavy folder with a label on the outside: Harvey Lee Oswald.
When the police