Suzy Mule - Let's Read Together Series Author:Barbara Derubertis, Barbara De Rubertis In Suzy Mule the focus is on the long vowel sound of the letter u. Suzy Mule has the flu and is feeling blue. Then she gets a super idea: go south! 32 pages, 6 1/2 x 9, Audio Cassette: Side A: Read-Along, Side B: Listening, Ages 3-7