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Young Bill Gates, software developer, president and CEO of Microsoft, circa March, 1985. (USA)
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Young Bill Gates, software developer, president an...

Young Bill Gates, software developer, president and CEO of Microsoft, in the 1980s.
LMY25T01_2JCJRXH

Young Bill Gates, software developer, president an...

Young Bill Gates, software developer, president and CEO of Microsoft, in the 1980s.
LMY25T01_2JCJRWP

Young Bill Gates, software developer, president an...

Young Bill Gates, software developer, president and CEO of Microsoft. (USA)
LMY25T01_2JCP08E

Young Bill Gates, software developer, president an...

Henrietta Leavitt (1868-1921), US astronomer. Leavitt graduated from Radcliffe College in 1892, and joined the Harvard College Observatory in 1895. Her early work on the photographic magnitudes of sta...
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Henrietta Leavitt (1868-1921), US astronomer. Leav...

Annie Jump Cannon and Henrietta Leavitt, 1913
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Annie Jump Cannon and Henrietta Leavitt, 1913

Henrietta Swan Leavitt 1868-1921 American Astronomer
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Henrietta Swan Leavitt 1868-1921 American Astronom...