The Twenty-One Balloons /
by William Pene Dubois
- First Scholastic printing, September 1995
- New York : Scholastic ; 1975 .
- 179 pages : illustrations ; 21 cm .
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Relates the incredible adventures of Professor William Waterman Sherman who in 1883 sets off in a balloon across the Pacific, survives the volcanic eruption of Krakatoa, and is eventually picked up in the Atlantic.