The World According to Humphrey (Unabridged)
2018
School Days According to Humphrey (Unabridged)
2011
Winter According to Humphrey (Unabridged)
2015
The Humphrey Audio Collection, Books 8-11: Mysteries According to Humphrey; Winter According to Humphrey; Secrets Accordingto Humphrey; Imagination According to Humphrey (Unabridged)
2015
Surprises According to Humphrey (Unabridged)
2018
Spring According to Humphrey (Unabridged)
2016