This photo in the archives of the Richard Nixon Library claims to show the closet that LBJ’s secret White House tapes recording system was installed in.
JFK’s Dictaphone Machine / White House Tapes
This is President John F. Kennedy’s Dictaphone machine that he used to dictate speeches, memoranda, and notes as well as to record some of his telephone calls in his collection of secret White House tapes. It’s one of the artifacts in the holdings of the JFK Library & Museum.