On a vacation with their mother and stepfather, Jane, Mark, Katharine, and Martha find themselves overwhelmed with a lakeful of magical adventures after Mark captures an ancient turtle that seems to have extraordinary powers.
- ISBN10 0152020772
- ISBN13 9780152020774
- Publish Date 31 March 1999 (first published 1 April 1957)
- Publish Status Out of Print
- Out of Print 14 June 2021
- Publish Country US
- Imprint Houghton Mifflin
- Format Hardcover
- Pages 208
- Language English