George Bird Grinnell was an important figure in the early conservation movement and played a key role in establishing a number of national parks in the U.S. His love of nature shines through in the "Jack" series of action-adventure novels geared for younger audiences, including this volume, in which intrepid adventurer Jack Danvers participates in a pioneer pack train.
- National Poetry Month
- Mine a Good Book
- 250th Anniversary of the American Revolution
- Earth Day Reads
- 2025 Libby Book Award Winners and Runners Up
- How Does Your Garden Grow?
- Always Available Ebooks: Kids Classics
- Always Available Ebooks: Classic Fiction
- Always Available Ebooks: Classic Nonfiction
- Great reads without the wait!
- Adapted for Young Readers
- See all ebooks collections
- National Poetry Month
- Mine a Good Book
- 250th Anniversary of the American Revolution
- Earth Day Reads
- 2025 Libby Book Award Winners and Runners Up
- How Does Your Garden Grow?
- Always Available Audiobooks
- Great reads without the wait!
- Everyone Reads: Spanish Titles for Young Readers
- Adapted for Young Readers
- See all audiobooks collections