Publisher: Collins

First Printed: 1977 (26th September)

Cover Artist: Peter Archer
Frontispiece Artist: Peter Archer
Internal illustrator: None

ISBN: 0-00-160539-9

Story version: Revised text

First Printing Attributes:
-- Blue spine box with white text.
-- 42 titles listed on reverse cover.
-- Page edges not stained.
-- Gold price label: £1.25.

Spine Art Description:
-- Frank punches masked man.

Publisher: Collins

First Printed: ~1985

Cover Artist: Peter Archer
Frontispiece Artist: Peter Archer
Internal illustrator: None

ISBN: 0-00-160539-9

Story version: Revised text

First Printing Attributes:
-- Retail price: £1.50
-- 12 titles listed on reverse cover.
-- Printed on white paper.

Spine Art Description:
-- N/A.

Publisher: Armada Books
Cover Layout: Format C

First Printed: 1985

Cover Artist: Unknown

ISBN: 0-00-692503-0

Notes:
-- First printing back cover prices are as follows:
£1.25 (UK), $4.95 (NZ).

Publisher: Armada Books
Cover Layout: Format E

First Printed: 1993

Cover Artist: David Browne

ISBN: 0-00-692503-0

Notes:
-- The boulder in this illustration was based on a rock about 4-inches in size. David posed as one of the Hardy Boys in his garden, and grafted a head from a model onto his body in the final artwork. (Source: the interview with British artist David Browne, conducted by Bob Finnan in 2003).

Publisher: Diamond Books

First Printed: 1993

Featured stories:
#36 - The Ghost At Skeleton Rock
#37 - The Clue of the Broken Blade
#38 - The Secret of Wildcat Swamp

Cover Artist: David Browne

ISBN: None