Indiana Jones and the Hollow Earth

INDIANA JONES AND THE HOLLOW EARTH by Max McCoy takes us on an adventure with Indy traversing the Arctic to retrieve a canister that contains the crystal skull. With a team of military folks, they fly the B-18P (P for Polar), also affectionately called the Penguin by Indy’s copilot friend, Clarence. The name seems to rub off on the others too.