1947

In 1947, a Nedenah spacecraft crashed in Roswell, New Mexico. (PROSE: The Devil Goblins from Neptune)

On 13 June, another spacecraft, piloted by alien ambassador Seruba Velak, also crash landed in the vicinity of Roswell. She was taken prisoner by the US government and held in captivity in Area 51 for the next eleven years until being freed by the Tenth Doctor and her husband Rivesh Mantilax in 1958. (TV: Dreamland)

The technology from one of the above crashes ended up in the hands of Henry van Statten decades later. He used it to develop broadband internet. (TV: Dalek)

The Second Doctor recalled either participating in or observing an alien autopsy, which was recorded, in Roswell during this year. The alien in question was presumably one of the victims of the crash of the Nedenah spacecraft. (PROSE: The Wheel of Ice)

The Second Doctor, Ben Jackson and Polly Wright arrived in Los Angeles and assisted the police in a murder investigation. (PROSE: Dying in the Sun)

British occultist Aleister Crowley faked his own death in Hastings as part of his recruitment by the Americans into the Golgotha Project. (PROSE: Heart of TARDIS)

The Tenth Doctor and Donna Noble arrived in Calcutta, British India where they met Mohandas Gandhi. (PROSE: Ghosts of India) India gained dominion status that same year. (PROSE: All-Consuming Fire)