Moby Shinobi and Toby, Too!

Surf's Up!: An Acorn Book (Moby Shinobi and Toby, Too! #1)

Take a Hike!: An Acorn Book (Moby Shinobi and Toby Too! #2)

Ready, Set, Go!: An Acorn Book (Moby Shinobi and Toby Too! #3)