Franklin W. Dixon

The Secret of the Caves is Volume 7 in the original The Hardy Boys Mystery Stories published by Grosset & Dunlap. This book was written for the Stratemeyer Syndicate by Leslie McFarlane in 1929. Between 1959 and 1973 the first 38 volumes of this series were systematically revised as part of a project directed by …

The Secret of Wildcat Swamp is Volume 31 in the original The Hardy Boys Mystery Stories published by Grosset & Dunlap. This book was written for the Stratemeyer Syndicate by William Dougherty in 1952. Between 1959 and 1973 the first 38 volumes of this series were systematically revised as part of a project …

The Secret of Skull Mountain is Volume 27 in the original The Hardy Boys Mystery Stories 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 …

The Secret of Pirates' Hill is Volume 36 in the original The Hardy Boys Mystery Stories published by Grosset & Dunlap. This book was written for the Stratemeyer Syndicate by John Almquist in 1956. Between 1959 and 1973 the first 38 volumes of this series were systematically revised as part of a project directed by …

The Secret Warning is Volume 17 in the original The Hardy Boys Mystery Stories published by Grosset & Dunlap. This book was written for the Stratemeyer Syndicate in collaboration by John Button and Leslie McFarlane in 1938. Between 1959 and 1973 the first 38 volumes of this series were systematically revised as …

The Secret Panel is Volume 25 in the original The Hardy Boys Mystery Stories published by Grosset & Dunlap. This book was written for the Stratemeyer Syndicate by Harriet S. Adams in 1946. Between 1959 and 1973 the first 38 volumes of this series were systematically revised as part of a project directed by Harriet …

The Secret Agent on Flight 101 is Volume 46 in the original The Hardy Boys Mystery Stories published by Grosset & Dunlap. This book was written for the Stratemeyer Syndicate by Tom Mulvey in 1967. Mulvey was also responsible for editing other Stratemeyer Syndicate stories with aviation content.