"HAND ME THAT WRENCH, MARK!" What's Professor Amos Henderson up to now? Why he's building a new wondrous new kind of submarine! In the first installment of the Great Marvel series, the Professor built an airship. This time, it's the South Pole and along for the ride are teenagers Jack Darrow and Mark Sampson, a few helpers, and the remarkable Washington White. They encounter devil fish, angry whales, the tricky Sargasso Sea sucker fish and a giant octopus. They save a shipwrecked mother and daughter -- and then get into really hot water before they discover the Great Secret of the South Pole.

Author Biography

Roy Rockwood was a house pseudonym used by the Stratemeyer Syndicate for boy's adventure books. The name is most well-remembered for the Bomba the Jungle Boy and Great Marvel series. Deep Sea (1905-1908)--Later reused as part of Dave Fearless series Great Marvel (1906-1935)--Volumes 1-5 and 8 ghostwritten by Howard R. Garis Speedwell Boys (1913-1915) Dave Dashaway (1913-1915) Dave Fearless (1926-1927) Bomba, the Jungle Boy (1926-1937)--many ghostwritten by John William Duffield In addition to Garis and Duffield, some of these books were also written by Leslie McFarlane and W. Bert Foster. Edward Stratemeyer had earlier used the pseudonym "Roy Rockwood" for the book The Wizard of the Sea; or a Trip Under the Ocean, published by the Mershon Company in 1900.