Botsford, George Willis

Botsford, George Willis

Botsford, George Willis, 1862-1917, American historian, b. West Union, Iowa. After some years (1895-1901) at Harvard, he taught (1901-17) ancient history at Columbia. An outstanding authority on ancient history, he wrote numerous monographs and scholarly works but is best remembered for his high school and college textbooks. His Hellenic History (1922) was especially well received. He collaborated with E. G. Sihler on a source book, Hellenic Civilization (1915, repr. 1965).

George Willis Ritchey (December 31 1864November 4 1945) was an American optician and telescope maker and astronomer born at Tuppers Plains, Ohio.

Ritchey was educated as a furniture maker. He coinvented the Ritchey-Chrétien reflector telescope along with Henri Chrétien.

He played a major role in designing the mountings and making the mirrors of the 60-inch and 100-inch telescopes at Mount Wilson Observatory. He worked closely with George Ellery Hale.

Craters on Mars and the Moon were named in his honor.

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