Two books originally published separately, one featuring Elmer, a little elephant, the other, a pair of playful penguins named Polly and Peter.
- ISBN10 0679206027
- ISBN13 9780679206026
- Publish Date 1 January 1978
- Publish Status Out of Print
- Out of Print 12 November 2014
- Publish Country US
- Imprint David McKay Company
- Format Hardcover
- Pages 95
- Language English