00504cam a2200181 4500 547812006 TxAuBib 20200820120000.0 200819s1977||||||||||||||||||||||||und|u TxAuBib Campbell, Julie. The Gatehouse Mystery. Racine, Wisconsin : Golden Press, 1977. 234pp : paperback. Trixie Belden ; 3 20200820. Trixie Belden ; 3.