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by Franklin W. DixonHardcover details (USA). details (UK). details (Germany). details (Canada). ISBN: 978-1-55709-273-1 ISBN-10: 1-55709-273-7 Applewood Books · 2004 |
| See also: | ||
| 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) |
| 1936 | Hardcover | The Sinister Signpost (Hardy Boys #15) |