When the magic tree house whisks Jack and Annie off to Greenland, they're not sure what time they've landed in, but they immediately know what their mission is: save a narwhal! Then they meet a young hunter named Leif Erikson and they ask for his help. But Leif has other ideas...
juvenile
by Mary Pope Osborne ; illustrations by AG Ford.
"A Stepping Stone book."
Narwhal on a sunny night
Osborne, Mary Pope
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