The Aldens are visiting Grandfather's friend, Amy, at the Ogopogo Retreat in Canada. Amy rents cabins to tourists who hope to see the mysterious underwater creature, the Ogopogo, swimming in the lake.
| ISBN: | 9780807513361 |
| Publication date: | 1st January 2006 |
| Author: | Gertrude Chandler Warner, Robert Papp |
| Publisher: | Albert Whitman & Company |
| Format: | Hardback |
| Pagination: | 115 pages |
| Series: | The Boxcar Children Mysteries |