Muskrat

Free to read here, from Project Gutenberg.

Swamp Cat

Jim Kjelgaard, also an audiobook

The Adventures of Jerry Muskrat

Thornton W. Burgess, also an audiobook

Uncle Wiggily Goes Swimming; Or, How the Frog Boys Surprised the Fox

Howard Roger Garis

Uncle Wiggily's funny auto

Howard Roger Garis

Uncle Wiggily and the Pirates; Or, How the Enemy Craft of Pirate Fox was Sunk

Howard Roger Garis