ISBN-13: 9781492723400 / Angielski / Miękka / 2013 / 36 str.
Lenny is all for teamwork when it works the way he wants it to. In "Lenny Loses His Z," Grace, Lenny's best friend is introduced. The story begins ending their camp experience with a show for their family. Lenny learns quickly why his feelings have changed about teamwork.