Firefly HollowBook - 2015?
Because their dreams of daring adventures go against the cautious teachings of their nations, Firefly and Cricket set out on their own, find a home with kindly Vole, and together help a grieving "miniature giant" named Peter.
Publisher: New York : Atheneum Books for Young Readers, [2015?]
Edition: First edition.
Characteristics: 291 pages : illustrations (some color) ; 21 cm