In Seattle, she became something of a local celebrity, founding the pioneering and much-imitated "If All Seattle Read The Same Book" project, encouraging every adult and every adolescent in the city to read the same book at the same time. The project, initially funded by a grant from the Lila Wallace-Reader's Digest Fund, was subsequently adopted by a number of cities, including Chicago, Buffalo and Rochester. Pearl appeared regularly on KUOW public radio to review and recommend books. While there she first came up with her "Rule of 50" to read a book's first 50 pages before deciding if you were interested enough to finish it or uninterested enough to quit. She later became the executive director of the library system's Washington Center for the Book. She has also taught a readers' advisory course at the University of Washington Information School called "Book Lust 101."