The twenty-one balloons /
written and illustrated by William Pene Du Bois.
- New York, N.Y., U.S.A. : Puffin Books, 1986, c1947.
- 179 p. : ill. ; 20 cm.
- Puffin Newbery library .
Level V Reprint. Originally published: New York : Viking Press, 1947.
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.