Before Marilyn tells the story of Marilyn Monroe's modelling career, during which time she was signed to the famous Blue Book Agency in Hollywood. The head of the agency, Miss Emmeline Snively, saw potential in the young woman and kept detailed records and correspondence throughout their professional relationship and beyond. On the day of Monroe's funeral, Snively gave an interview from her office, talking about the girl she had discovered, before announcing, rather dramatically, that she was closing the lid on her Marilyn Monroe archive that day - to `lock it away forever'. This archive was purchased by Astrid Franse, and together with bestselling Marilyn Monroe biographer Michelle Morgan they draw on this collection of never-before-seen documents, letters and much, much more. Before Marilyn explores an aspect of Monroe's life that has never been fully revealed - by charting every modelling job she did, and illustrating the text with rare and unpublished photographs of the young model and her mentor.