Tác giả: Harold L. Goodwin
Wailing Octopus
Harold L. Goodwin
Blue Ghost Mystery
Harold L. Goodwin
Flying Stingaree
Harold L. Goodwin
Smugglers' Reef
Harold L. Goodwin
Boy Scouts in Russia
Harold L. Goodwin
Rip Foster Rides the Gray Planet
Harold L. Goodwin
Caves of Fear
Harold L. Goodwin
Smugglers' Reef
Harold L. Goodwin
Rip Foster Rides the Gray Planet
Harold L. Goodwin
Caves of Fear
Harold L. Goodwin