Julie Campbell is an American author best known for her work in children's literature. She gained popularity for creating the beloved character Trixie Belden, a young detective who embarks on various adventures with her friends. The Trixie Belden series, which began in the 1940s, has captivated young readers for decades. In addition to her work on Trixie Belden, Julie Campbell also wrote under the pseudonym Julie Campbell Tatham. Her contributions to literature have left a lasting impact, inspiring generations of readers to explore the world of mystery and adventure through her engaging storytelling.