Betty G. Birney

Happiness According to Humphrey

La vida de acuerdo a la rana Og

Wildlife According to Og the Frog

Exploring According to Og the Frog

La amistad de acuerdo a Humphrey

Humphrey's Big Birthday Bash

The Humphrey Audio Collection, Books 1-3: The World According to Humphrey; Friendship According to Humphrey; and Trouble According to Humphrey (Unabridged)

The Humphrey Audio Collection, Books 4-7: Surprises According to Humphrey; Adventure According to Humphrey; Summer According to Humphrey; and School Days According to Humphrey (Unabridged)

Happiness According to Humphrey (Unabridged)

Wildlife According to Og the Frog (Unabridged)

Exploring According to Og the Frog (Unabridged)

School Days According to Humphrey (Unabridged)