1948 Medal Winner
"Professor William Waterman Sherman, a disillusioned schoolteacher, sails in a giant balloon over the Pacific, lands on the island of Krakatoa, and witnesses a stupendous explosion in which that notorious island blows up. When Professor Sherman is found adrift in the Atlantic clinging to the debris of twenty balloons, all America rocks with curiosity. Much of the story is based on complete truth-scientific principles behind nineteenth century balloon inventions and the history of the amazing civilization found on Krakatoa. The rest, agrees the author, is absolute nonsense."
Let's just say...this wasn't one of my favorites. The middle of the book was fairly interesting, with its descriptions of outlandish inventions (and keeping in mind this was written in the 1940's), but otherwise, I had a hard time getting into this one.