- Dates unknown:
- Loretta is born to Lewis and Louise.
- Biff created BiffCo, and bought much of the property in Hill Valley, including Otis Peabody's Lone Pine Ranch.
- George McFly, Goldie Wilson, Stanford S. Strickland, Mrs. Blumberg (the editor of the Hill Valley Telegraph), Mark Dixon, and three other individuals turned the Hill Valley Civic Committee into a secret committee with the sole purpose of stopping Biff.
- The Hill Valley Telegraph was sold to The Washington Post, to prevent Biff from buying it. They published an article that was critical of BiffCo.
- Biff bought the Hill Valley Police Department, a television and radio station, and most of the property in Hill Valley.
- Thursday, March 15: George was to receive a book award from the Hill Valley Civic Committee. However, he never made it to the ceremony, as he was murdered by Biff Tannen in an alleyway.
- Date Unknown: Biff Tannen marries Lorraine Baines McFly.
- Back to the Future Part II (Mentioned only)
- Back to the Future: The Card Game (Mentioned only)
- Back to the Future: Biff to the Future
Notes and references
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