"Don and his uncles joined an expedition bound by air across the north pole. A great polar blizzard nearly wrecks the airship."--Dust-jacket flap.

"Don Sturdy in the tombs of gold; or, The old Egyptian's great secret" by Victor Appleton. Published by Good Press. Good Press publishes a wide range of titles

Tom receives a message from his missionary friend which describes a wonderful lost city, filled with treasures of gold, somewhere deep in the heart of Mexico.