The Heroic Age of American Invention

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Overview:

Title: The Heroic Age of American Invention
Author: L. Sprague de Camp
Year: 1965
Publisher: Doubleday
Price: $4.50
Pages: 290
Binding: Hardcover
Type: Non-fiction
Title Reference: The Heroic Age of American Invention
Notes: Third printing.
No printing or edition stated. No ISBN or number given.
Estimated publication date based on gutter code of "G31".
According to Laughlin & Levack, De Camp, Underwood-Miller, 1983, first printing has "First Edition" on the copyright page and "1961" on the title page, gutter code C-3. Second printing gutter code F34 and fourth printing H28, fifth printing I1.
Fourth printing verified.