Set of four small paperbacks in a cardboard slipcase from Trumpet Book Clubs, special edition. Originally published in the 1970s, you get Blackboard Bear, We’re in Big Trouble Blackboard Bear, I Sure Am Glad to See You Blackboard Bear and And My Mean Old Mother Will be Sorry Blackboard Bear. ISBN of the set : 0440847540 Printed in Singapore, 1992. A hard to find collection of beloved stories by Martha Alexander. Box and books in good shape with gentle wear. Smoke free pet free environment.