The Secret in the Old Attic (Nancy Drew Mystery Stories No. 21)

177 pp. Last title listed on back cover: Strange Message in the Parchment. "Nancy Drew is a fictional young amateur detective in various mystery series for all ages. She was created by Edward Stratemeyer, founder of the Stratemeyer Syndicate book packaging firm. The character first appeared in 1930. The books have been ghostwritten by a number of authors and are published under the collective pseudonym Carolyn Keene."