First published by A.L Burt, this series was later reprinted by World
Syndicate.
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- THE MYSTERY BOYS AND THE INCA GOLD -- 1931. A.L. Burt; World
Syndicate.
- THE MYSTERY BOYS AND CAPTAIN KIDD'S MESSAGE -- 1931. A.L.
Burt; World Syndicate.
- THE MYSTERY BOYS AND THE SECRET OF THE GOLDEN SUN -- 1931.
A.L. Burt. World Syndicate.
- THE MYSTERY BOYS AND THE CHINESE JEWELS -- 1931. A.L.
Burt; World Syndicate.
- THE MYSTERY BOYS AND THE HINDU TREASURE -- 1931. A.L. Burt;
World Publishing.
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