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by Franklin W. DixonHardcover details (USA). details (UK). details (Germany). details (Canada). ISBN: 978-0-448-08915-7 ISBN-10: 0-448-08915-7 Grosset & Dunlap · 1936 |
| See also: | ||
| 2004 | Hardcover | The Sinister Signpost (Hardy Boys, Book 15) |
| 1989 | Paperback | Sinister Signpost (Hardy Boys Mystery Stories) |
| 1982 | Paperback | Sinister Signpost (Hardy Boys Mystery Stories) |
| 1975 | Paperback | The Sinister Signpost (Hardy boys mystery stories / Franklin W Dixon) |
| 1972 | Hardcover | Sinister Signpost (Hardy boys mystery stories/Franklin W Dixon) |