Amelia Earhart

According to Diane Holmes, Amelia Earhart disappeared in 1932. After accidentally travelling from 1953 to the 21st century through the Cardiff Space-Time Rift, Diane speculated that the same happened to Earheart, but Owen Harper stated that this was highly unlikely. (TV: Out of Time)

The Fifth Doctor had Amelia Earhart's flying jacket in his TARDIS wardrobe. Erimem put it on to keep warm. (AUDIO: No Place Like Home)

DOCTOR referred to "that little encounter with Amelia Earhart" as an incident in the Doctor's history that the Eighth Doctor wouldn't want historians to know about. (PROSE: Seeing I)

Behind the scenes
The year Diane gives is at variance with the real life year of Earhart's disappearance — 1937 — suggesting yet another difference between the DWU and real life.