The Masked Monkey is Volume 51 in the original The Hardy Boys Mystery Stories published by Grosset & Dunlap. This book was written for the Stratemeyer Syndicate by Vincent Buranelli in 1972.
The Masked Monkey is Volume 51 in the original The Hardy Boys Mystery Stories published by Grosset & Dunlap. This book was written for the Stratemeyer Syndicate by Vincent Buranelli in 1972. (en)
The Masked Monkey is Volume 51 in the original The Hardy Boys Mystery Stories published by Grosset & Dunlap. This book was written for the Stratemeyer Syndicate by Vincent Buranelli in 1972. (en)