Publisher: Collins

First Printed: 1971

Cover Artist: Peter Archer
Frontispiece Artist: Roger Hall
Internal illustrator: Roger Hall

ISBN: 0-00-160501-1

Story version: N/A

First Printing Attributes:
-- Orange spine box with black text.
-- 12 titles listed on reverse cover.
-- Blue staining on page edges.
-- Gold price label: 35p.

Spine Art Description:
-- Frank threatened by man with dagger.

Publisher: Armada Books
Cover Layout: Format A

First Printed: 1974 (February)

Cover Artist: Peter Archer

ISBN: 0-00-690812-8

Notes:
-- First printing back cover prices are as follows:
£0.25 (UK), $0.70 (NZ), $0.70, (AU), $0.95 (CAN).

Publisher: Armada Books
Cover Layout: Format C

First Printed: 1985

Cover Artist: Unknown

ISBN: 0-00-692519-7

Publisher: Armada Books
Cover Layout: Format D

First Printed: 1988

Cover Artist: Unknown

ISBN: 0-00-692519-7

Publisher: Armada Books
Cover Layout: Format E

First Printed: 1992

Cover Artist: David Browne

ISBN: 0-00-692519-7

Notes:
-- This was the first cover that David Browne produced for the series, in late 1990 / early 1991. (Source: the interview with British artist David Browne, conducted by Bob Finnan in 2003).

Publisher: Armada Books

Cover Layout: Format E

First Printed: 1994

Featured stories:
#1 - The Mystery of the Aztec Warrior
#2 - The Arctic Patrol Mystery

Cover Artist: David Browne

ISBN: 0-00-694412-4

Notes:
-- First printing back cover prices are as follows:
£3.50 (UK), $12.95 inc. GST (NZ)

Publisher: Armada Books

Cover Layout: Format B

First Printed: 1983

Featured stories:
#1 - The Mystery of the Aztec Warrior
#5 - The Mystery of the Disappearing Floor
#12 - The Wailing Siren Mystery

Cover Artist: Unknown

ISBN: 0-00-692244-9

Notes:
-- First printing back cover prices are as follows:
£1.95 (UK), $6.95 (NZ), $ (AU), Not For Sale In Canada.