Title rated 4.3 out of 5 stars, based on 37 ratings(37 ratings)
Book, 1952
Current format, Book, 1952, , All copies in use.
Book, 1952
Current format, Book, 1952, , All copies in use. Offered in 0 more formats
An invitation from their science teacher to accompany him out west to Wildcat Swamp on an archaeological expedition triggers off a series of dangerous events for Frank & Joe Hardy.
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