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The Mightiest Machine

John W. Campbell, Jr.

First published 1947
Series Mightiest Machine
Publisher Hadley Publishing Company
Format Hardcover
Type Novel
Cover art Robert Pailthorpe
Pages 228
Price $3.00

  • On copyright page: "Copyright 1947 by John W. Campbell, Jr." and "Copyright by Street & Smith Publications 1935". No statement of edition or printing.
  • "Illustrated by Robert Pailthorpe" on title page. Blurb on front flap of jacket notes, "The Jacket and Illustrations are the work of Robert Pailthorpe ...." All four of the interior illustrations are signed with Pailthorpe's name or initials. There is no signature on the jacket art. Noted without explanation: both Chalker/Owings and Kemp credit the interior illustrations and this edition's jacket art to Betty Wells Halladay.
  • Later copies were issued in this jacket.

No ISBN on record — searching by title and author.

Title Year Publisher Format Type Catalog ID Cover Artist Pages
The Mightiest Machine Cover 1947 Hadley Publishing Company Hardcover Novel Frank R. Paul 228
The Mightiest Machine Cover 2023 Faded Page eBook Novel 20230427
The Mightiest Machine Cover 2025 Wildside Press Trade Paperback Novel 160
The Mightiest Machine 2025 Wildside Press Hardcover Novel 162
The Mightiest Machine 8888 Buffalo Book Company Unknown Novel