Short answers, pulled from the story.
The Academy Award for Best Adapted Screenplay began in 1928 under the name Best Writing, Adaptation. This initial label covered both original scripts and adapted sources without distinction until later changes.
Joseph L. Mankiewicz achieved a rare feat by winning two consecutive years in 1949 and 1950. He remains one of only eight individuals to win twice in this specific category.
Frances Marion broke barriers as the first woman to win any screenplay category in 1930. She received the award for The Big House before separate categories existed.
Novels remain the most frequently adapted medium throughout the award's ninety-year history. Stage plays appear regularly among nominees with works like Pygmalion and A Streetcar Named Desire.
It was not until 1984 that the current designation of Best Adapted Screenplay officially replaced previous iterations. These naming shifts reflect changing industry standards regarding what constitutes an adaptation versus an original work.