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Arizona’s Hassayampa River as it passes beneath a highway bridge, looking modern and not too mysterious. Clayton B. Fraser, Hassayampa Bridge at old U.S. Highway 80, Arlington, Arizona, circa 1993.

Of Note: Hassayampers Unite!

Posted by: Josh Levy

In June 1910, a few days after President William Howard Taft signed legislation allowing the Arizona and New Mexico territories to move toward statehood, a strange telegram arrived in the White House, which reveals the story of a river that once buzzed with legend.

Two men in suits standing behind metal radiator on table

Intern Spotlight: Uncovering African American Innovation and Entrepreneurship in the Manuscript Division

Posted by: Josh Levy

This is a guest post by Onur Ayaz, formerly a Junior Fellow in the Manuscript Division. When does entrepreneurship become innovative, and when does innovation become invention? Are activists, educators, scientists, and laborers also innovators? Are they entrepreneurs? In 1918 Carter G. Woodson, an African American historian who also collected manuscripts, ephemera, and other materials …

Nautical Almanac Office director Charles Henry Davis offers Maria Mitchell a position as a “computer,” at a time when computers were people and opportunities for professional work in astronomy were vanishingly few, for both men and women. Davis to Mitchell, August 10, 1849.

Maria Mitchell’s Enduring Legacy: From Astronomical Poetry to Liberty Ships

Posted by: Josh Levy

This post is coauthored by Morgan Black, librarian at the United States Naval Observatory, and Josh Levy, historian of science and technology at the Library of Congress Manuscript Division. When Maria Mitchell spotted a telescopic comet from the roof of her Nantucket home in 1847, a historic feat that helped make her a national celebrity, …