Despite her activism during the golden age of cinema, Mary C McCall Jr was all but forgotten. Now a new book is about to set the record straight

To screenwriters in the 1950s, she was a major power player, fighting for pay rises and striking rights. To the Hollywood studio heads, she was “the meanest bitch in town”.

Now, a new book aims to restore Mary C McCall Jr’s reputation as one of the film industry’s most important figures, a trailblazer who was airbrushed from history after getting on the wrong side of movie moguls.