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| Calvin Coolidge as President and Herbert Hoover Signed Appointment to Examiner-in-chief of the U.S. Patent Office. [American President]
Document signed Calvin Coolidge, as president, Herbert Hoover, as Secretary of Commerce, appointing Eugene Landers. December 21, 1927, one page.
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| On Hold: Herbert Hoover Signed Book [American President]
Book signed and inscribed “To Eldridge R. Johnson With Kind Regards of Herbert Hoover”. Georgius Agricola, De Re Metallica. London: The Mining Magazine, 1912, 640 pages. Translated from the first Latin edition of 1556 by Herbert Clark Hoover and Lou Henry Hoover. Hoover graduated from Stanford in 1895 with a Bachelor’s in geology, but unable to find work as a surveyor, pushed ore carts 70 hours a week at a gold mine near Nevada City, California. The next year he was hired as a mining engineer and soon became developer of some very profitable mines including the Baldwin silver mine in Burma from which his fortune, an estimated $4 million by 1914, was derived.
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