Upper right - (see previouse post).
Lower left - Penguin and Little Blue by Megan McDonald and illustrated by Katherine Tillotson published in 2003. From front book flap, " Most of us agree- penguins included - that there is no place like home. Also no business like show business. For Penguin and Little Blue, home is Antarctica and far, far away. They are both missing all one million three hundred twenty-eight thousand and forty-eight of their feathered friends. And show business is hard work. The only homelike treats anywhere in their Kansas hotel are an ice machine and a bathtub (much more fun than the pool they have to dive, dive, dive into for spectators). After long days signing autographs Little Blue and Penguin dream of enjoying the white ice, blue ice, pancake ice, pencil ice, ice cakes, ice falls, and fast ice of home. But how oh how can they escape show business and reach Antarctica?"
Lower right - Penguin Pete's New Friends by Marcu Pfister published in 1988. From back cover, "In this second book in the Penguin Pete series, Pete leaves his mother's side to go on a voyage of discovery and makes many new friends along the way."