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Each Proofcard bears an original work of art complementing the theme of the stamp and created exclusively for Fleetwood by a leading American artist. Proofcards are often collected on their own, but would also make a beautiful addition to your existing stamp or cover collection.
Samuel Pierpont Langley. Born: August 22, 1834 in Roxbury, Massachusetts, USA. Died: February 27, 1906 (71 years old) Total Cards: 1.
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Samuel Pierpont Langley’s Firsthand Account of His Aerodrome Flight Experiments. Source: Scientific American Supplement, No. 1405, December 6, 1902, From the Smithsonian Report for 1900. Now, in all ordinary construction, as in building a steamboat or a house, engineers have what they call a factor of safety.
By 1925 the American library card catalog had substantially evolved and standardized catalog cards (7.5 x 12.5 cm) in standardized card catalog cabinets were in widespread use. The card catalog cabinet illustrated below is from a 1925 Library Bureau supply catalog.
Samuel Pierpont Langley (August 22, 1834 – February 27, 1906) was an American aviation pioneer, astronomer and physicist who invented the bolometer. He was the third secretary of the Smithsonian Institution and a professor of astronomy at the University of Pittsburgh, where he was the director of the Allegheny Observatory.
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May 22, 2014 · Today you can learn how to build your own card catalog cabinet. I came up with the idea and REALLY wanted to build it myself. Turns out it isn't a great beginner build.
