Publisher: Random House
First Printed: 1974
Cover Art by Jack Hearne
Internal Illustrations by Jack Hearne

Trade & GLB Edition First Printing Identification: 1234567890 numberline on the copyright page.

Additional Trade Edition First Printing Characteristics:
-- Matte cover finish
-- Blue graveyard/spiderweb endpapers
-- Back cover list to The Mystery of the Dead Man's Riddle
-- No inner list

Notes:
-- The graveyard/spiderweb endpapers were present only in the First Printing of the Trade Edition. This also applies to The Mystery of the Dead Man's Riddle. All subsequent printings of these two, as well as all printings of the remaining new Trade books in the series, had just plain white endpapers.
-- This was the first title in both the Trade and GLB editions to contain the printing numberline on the copyright page.
-- Late printings of the GLB Edition used Robert Adragna's cover art as shown below.

First Printed: circa 1981
Cover Art by Robert Adragna
Internal Illustrations by Jack Hearne

First Printing Identification: 7890 numberline on the copyright page.

Notes:
-- This particular example is a Seventh Printing (as indicated by the numberline) and a note on the contents page indicates the book was purchased by the library in August 1981.

Publisher: Scholastic Book Services
First Printed: September 1975
Cover Art by Jack Hearne
Internal Illustrations: None

First Printing Identification:"First Printing" is noted on the copyright page.

Publisher: Random House
Common Name: Hitchcock Cover
First Printed: 1980
Cover Art by Robert Adragna
Internal Illustrations: None

First Printing Identification: 1234567890 numberline on the copyright page.

Publisher: Random House
Common Name: Keyhole Cover
First Printed: 1984
Cover Art by Robert Adragna
Internal Illustrations: None

First Printing Identification: 1234567890 numberline on the copyright page.

Publisher: Alfred A. Knopf, Inc.
First Printed: June 1991
Cover Art by Dominick Finelle
Internal Illustrations: None

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

Notes:
-- The text of this edition is identical to the Revised Edition's text.
-- Knopf is a division of Random House.