Publisher: Random House
First Printed: 1969
Cover Art by Harry Kane
Internal Illustrations by Harry Kane

Trade Edition First Printing Identification:
-- Back cover list to The Mystery of the Laughing Shadow

Additional Trade Edition First Printing Characteristics:
-- Matte cover finish
-- Blue graveyard/spiderweb endpapers
-- Rear Inner list to The Mystery of the Laughing Shadow
-- No ISBN on the back cover
-- Copyright Page details: click here

Notes:
-- At least two printings of the Trade Edition can be found with the semi-gloss cover finish. They either list to The Mystery of the Nervous Lion or The Mystery of Monster Mountain on the back cover.

Publisher: Random House
Common Name: Marchesi Cover
First Printed: 1978
Cover Art by Stephen Marchesi
Internal Illustrations by Harry Kane

First Printing Identification: 1234567890 numberline on the copyright page.

Notes:
-- The cover art for this edition was changed in its Ninth Printing (1982) to the Robert Adragna work shown below. This change in cover art did not require an edition change.

Common Name: Hitchcock Cover
First Printed: 1982, Ninth Printing
Cover Art by Robert Adragna
Internal Illustrations by Harry Kane

First Printing Identification: 90 numberline on the copyright page.

Publisher: Scholastic Book Services
First Printed: September 1979
Cover Art by Charles Liese
Internal Illustrations: None

First Printing Identification: 12 11 10 9 8 7 6 5 4 3 2 1 numberline on the copyright page.

Publisher: Random House
Common Name: Keyhole Cover
First Printed: 1985
Cover Art by Robert Adragna
Internal Illustrations: None

First Printing Identification: 1234567890 numberline on the copyright page.

Publisher: Weekly Reader Books
First Printed: circa 1987
Cover Art by Robert Adragna
Internal Illustrations: None

First Printing Identification: 1234567890 numberline on the copyright page.

Notes:
-- The text of this issue is identical to the 1985 Revised Edition.