15 December

On 15 December 1860, Will Johnson sent a letter from Diensberg, Massachusetts to Paul LeVal in South Carolina. In it, he informed him that Claire Bartlett's cousin Abigail had fallen ill, and assured the man that the United States of America would not be splitting simply because of President Abraham Lincoln's election. (PROSE: Blood and Hope)

In 1906, the Great Northern, Piccadilly and Brompton Railway underground line opened. This key strategic weakness in metropolitan living would later be exploited by an army of Robot Yetis. (PROSE: Time Traveller's Diary)

In 1944, the Eighth Doctor, Sam Jones and Fitz Kreiner visited the Battle of the Bulge. (PROSE: Autumn Mist)

In 1980, a public vigil continued in New York City for the recently-slain John Lennon. Massive crowds in the city were heard to sing "Imagine" in the streets around where he was killed. (PROSE: The Left-Handed Hummingbird)

According to a calendar on the Snowcap base, 15 December 1986 was a Monday. (TV: The Tenth Planet)

In 2005, Glenn Reid, Jim Tozier's partner, died in or around Blackwood Falls from complications of a heavy cigarette habit. (PROSE: Forever Autumn)