Books by George W. Haylings:
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Haylings, George W. (George Wilfred): Discovered! 505 Odd Enterprises (second edition, ca. 1947) (HTML with commentary at Wayback Machine)- Haylings, George W. (George Wilfred): Hidden Dollars: A Group of Successful, Ingenious Business Ideas and Projects, Gathered From All Over the World (HTML with commentary at Wayback Machine)
Find more by George W. Haylings at your library, or elsewhere.