Harold Augustin Calahan
author (1889-1965)

Harold Augustin Calahan (November 7, 1889 – November 25, 1965) or H. A. Calahan was a lieutenant commander in the United States Navy and an author on sailing.
He was born in Brooklyn and attended Columbia University for his B.S., M.S. and his law degree. In 1917 he was working at an advertising agency, and he later married Gladys Britton. He died of a heart attack in 1965 in Port Chester, New York, and was buried in Arlington National Cemetery on November 30, 1965.
He is known for writing the novel Back to Treasure Island (1935), a sequel to Robert Louis Stevenson's Treasure Island. He strongly argued that Stevenson had in mind to write such a story.
Author
Learning to Sail (1932)
Learning to Race (1934)
Back to Treasure Island (1935)
Yachtsman's Omnibus: Learning to Sail, Learning to Race, Learning to Cruise (1935)
Wind and Tide in Yacht Racing (1936)
Ships's Husband: A Guide to Yachtsmen in the Care of Their Craft (1937)
Gadgets and Wrinkles: A Compendium of Man's Ingenuity at Sea (1938)
So You're Going to Buy a Boat (1939)
Rigging (1940)
What makes a war end?
“Harold Augustin Calahan” enters the record as author (1889-1965). Crown Archives preserves that source wording while asking what Harold, Augustin and Calahan can confirm, complicate or overturn.
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The entry’s evidential value lies in the named roles, institutions and publications that can be tested against primary documentation. The source revision retrieved here is dated Sep 2, 2026. The linked authority identifier is Q5659982. VIAF identifies the subject as 70726759. The Library of Congress control number is n99275357. 3 of 3 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1889, 1965, 1917 and 1935.
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This entry incorporates text from “Harold Augustin Calahan” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.