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Ahura Mazda - relief of the Zoroastrian god Ahura Mazda at the ancient ruins of Persepolis in Iran. Also known as Ormazd Zoroastrianism,
Which Religion Is the Oldest?
Statue of Nostradamus
Nostradamus and His Prophecies
Andrew Jackson delivering a speech while on his way to Washington, D.C., for his inauguration in 1829. From Harper's Weekly, 1881.
5 Remarkably Close U.S. Presidential Elections
Wolfgang Amadeus Mozart. Mozart rehearsing his 12th Mass with singer and musician. (Austrian composer. (Johann Chrysostom Wolfgang Amadeus Mozart)
7 Famous Child Prodigies
Snowshoe hare (Lepus americanus) with its Summer coat on the left side and its winter coat on the right.
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Lusitania sinking, illustration from The War of the Nations (New York), December 31, 1919. World War I, WWI. This image is one of three on the page. (See source file for the other two.)
7 of the World’s Deadliest Shipwrecks
Groups of depositors in front of the closed American Union Bank, New York City. April 26, 1932. Great Depression run on bank crowd
Causes of the Great Depression

crossline halftone

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production in photoengraving

  • In photoengraving: The halftone process

    …1869 an image with a crossline halftone was produced in the Canadian Illustrated News. Later, in 1882, a crossline halftone was produced using a single-direction screen, by making half the exposure with the screen in one position and half with the screen rotated a quarter turn. Two brothers, Max and…

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