There are, however, several books about the Beales and the film, including:
* "Gray Gardens: The Story of a Family" by Sally Beall, the Beales' cousin, which was the basis for the documentary.
* "Little Edie: The Life and Times of Edith Bouvier Beale" by Sam Kashner and Nancy Schoenberger, which focuses on the life of "Little Edie," the film's more flamboyant subject.
You can likely find these books at most bookstores or online retailers like Amazon.