Baseball /
by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Carlo Molinari.
- 122 pages : illustrations ; 20 cm.
- Magic Tree House Fact Tracker .
"A nonfiction companion to Magic Tree House #29: A Big day for Baseball." "A Stepping Stone Book." "The Magic Tree House Fact Tracker series was formerly known as the Magic Tree House Research Guide series"--T.p. verso.