Las mentiras de Koko

Written by	J.M. Parramón Homs and Eduard José
Illustrator	María Gracia
Published	1985
Publisher	Parramón
ISBN	8434203464

Las mentiras de Koko (Grover's Lies) is a 1985 Barrio Sésamo storybook featuring Grover.

"Koko" is an unusual spelling of Grover's Spanish name; he's usually known as Coco.