The Secret of Skull Mountain is the twenty-seventh volume in the original The Hardy Boys series of mystery books for children and teens published by Grosset & Dunlap.
This book was written for the Stratemeyer Syndicate by George Waller Jr. in 1948. Between 1959 and 1973, the first 38 volumes of this series were systematically revised as part of a project directed by Harriet Adams, Edward Stratemeyer's daughter. The original version of this book was shortened to 177 pages in 1966 by David Grambs,