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Setting the clocks hands by radio. U.S. Dunmore Bureau of Standards who adopted clock to radio control
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Setting the clocks hands by radio. U.S. Dunmore Bureau of Standards who adopted clock to radio control

Harris & Ewing · 1924 · photo, print, drawing

From the collection of Library of Congress. Free to download, adapt and use — no permission needed.

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united statesglass negatives
Credit lineSetting the clocks hands by radio. U.S. Dunmore Bureau of Standards who adopted clock to radio control. 1924. Harris & Ewing. Harris & Ewing Collection, Library of Congress. Public domain.
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