Because his grandmother is keeping to herself this summer, 11-year-old Michael must ride alone the tandem bike they usually share.
- ISBN10 0525666605
- ISBN13 9780525666608
- Publish Date 1 December 1979
- Publish Status Out of Print
- Out of Print 28 October 2015
- Publish Country US
- Publisher Penguin Putnam Inc
- Imprint TarcherPerigee
- Format Hardcover
- Pages 128
- Language English