#13 - The Secret of the Caves
Text by Franklin W. Dixon

Harold Hill / Collins / Armada Books: A, C, / 1 Omnibus Edition

Harold Hill Hardback Edition  

The Secret of the Caves (Harold Hill)

+ ZOOM D/J FRONT

The Secret of the Caves (Harold Hill)

+ ZOOM D/J BACK

The Secret of the Caves (Harold Hill)

Cream boards: cover & spine.

Publisher: Harold Hill

First Printed: 1953 (June)

Cover Artist: Frank Varty
Frontispiece Artist: A. O. Scott

Story version: Original text

General Attributes:
-- Spine number: 7
-- BNB gives date as [Jun] 1953
-- Orange/red Gretta end papers
-- Same frontispiece as 1944 US edition.

Board Colours:
-- Cream (pictured)
-- Stone
-- Red

Notes:
-- To view the Harold Hill preview for this title (which appeared on the reverse side of the dust-jacket for The Shore Road Mystery), please click here.

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Collins Hardback Edition  

The Secret of the Caves (Collins)

Publisher: Collins

First Printed: 1972

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

ISBN: 0-00-160513-5

Story version: Revised text

First Printing Attributes:
-- Blue spine box with white text.
-- 18 titles listed on reverse cover.
-- Blue staining on page edges.
-- Gold price label: 45p.

Spine Art Description:
-- Boys see hand emerging from pit

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Armada Paperback Edition  

The Secret of the Caves (Format A)

+ ZOOM COVER

+ ZOOM ARTWORK

Publisher: Armada Books
Cover Layout: Format A

First Printed: 1977 (-)

Cover Artist: Peter Archer

ISBN: 0-00-691363-6

Notes:
-- First printing back cover prices are as follows:
0.40 (UK), $1.20 (NZ), $1.00 (AU), Not For Sale In Canada.

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The Secret of the Caves (Format C)

+ ZOOM COVER

+ ZOOM ARTWORK

Publisher: Armada Books
Cover Layout: Format C

First Printed: 1984

Cover Artist: Unknown

ISBN: 0-00-692354-2

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Diamond Books Paperback Omnibus Edition

Diamond Books 3-in-1 Omnibus

Publisher: Diamond Books

First Printed: 1994

Featured stories:
#13 - The Secret of the Caves
#14 - The Secret of Pirates' Hill
#16 - The Secret of the Old Mill

Cover Artist: David Browne

ISBN: 0-261-66219-8

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 UK Collins Order

 US Order

Harold Hill only titles:

HH 2. House On The Cliff
HH 14. Hidden Harbour Mystery

Collins titles:

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