Grosset & Dunlap, an imprint of Penguin Group (USA) LLC,, [2014]
100 pages, 5 unnumbered pages : illustrations ; 20 cm.

Harper, an imprint of HarperCollinsPublishers,, 2014.
37 pages : color illustrations ; 27 cm.

Roaring Brook Press,, 2013.
p. cm.

Beach Lane Books,, 2012.
302 p. : maps ; 23 cm.

NBM,, c2012.
166 p. : chiefly ill. ; 23 cm.

Amulet Books,, 2012.
127 p. : ill. ; 20 cm.

Grosset & Dunlap,, c2011.
105 p. : ill., maps ; 20 cm.

Atheneum Books for Young Readers,, c2010.
297 p. : map ; 22 cm.

Dutton Children's Books,, c2010.
x, 195 p. : maps ; 22 cm.

Scholastic Press,, 2010.
229 p. : map ; 22 cm.