1870s

In the 1870s, the telephone was invented on Earth. (AUDIO: Other Lives)
At one point, the Eighth Doctor and Lucie Miller encountered his younger self, Charley Pollard and C'rizz in an American frontier town. The two versions of the Eighth Doctor played poker against each other. This encounter was observed by the Sixth Doctor and Evelyn Smythe. (AUDIO: The 100 Days of the Doctor)
Jack Harkness explained to Tyler Steele that in the 1870s, Torchwood Three had made the decision to round up the Weevils that inhabited the streets of Cardiff and provide them with accommodation and bathrooms within the base. (AUDIO: Hostile Environment)