Yount, Lisa.
Edward Pickering and his women "computers" : analyzing the stars / Lisa Yount.
In the 42 years that Edward Pickering directed the Harvard College Observatory, he and his team of women "computers" made strides in promoting the new field of astrophotography, discovered the first spectroscopic binary star system, and cataloged more than 225,000 stars.
Pickering, Edward C. (Edward Charles), 1846-1919 -- Juvenile literature.
Astronomers -- United States -- Biography -- Juvenile literature.
Physicists -- United States -- Biography -- Juvenile literature.