For information on Admiral Tyree try a second hand bookstore that accepts magazines; the National Geographic of February 1963 carries Admiral David Tyree's own story of his mission in Antarctica. OR National Geographic usually can provide new copies of old issues -- my last such cost $15.00. And your letter suggests you might enjoy also the National Geographic issue of June 1967 which had an article on the first scaling of Mount Tyree (a extremely challenging hill) in Antarctica.
Elinor Tyree
San Antonio, Texas, USA
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