1970A was an ABC timeline and a year in the 20th century. It was created when an elderly Biff Tannen from 2015 gave his younger self from 1955 a sports almanac to make himself rich.
1970A was an ABC timeline and a year in the 20th century. It was created when an elderly Biff Tannen from 2015 gave his younger self from 1955 a sports almanac to make himself rich.