info gallery citations

Cepheid Variables 1; Stars, Black Holes and Galaxies; Cosmology & Astronomy, Khan Academy & YouTube, 2011, Khan Academy

The American Physical Society. APS News, December 2017, The American Physical Society.

Henrietta Leavitt & the Human Computers: Great Minds, SciShow & YouTube, December 25, 2012

"Leavitt, Henrietta Swan (1868–1921).Women in World History: A Biographical Encyclopedia.Encyclopedia.com. (February 20, 2019), .

Lindsay Smith Zrull, Harvard University, 2019, Plate Stack Collection/Women's History.

The Star Child Team. NASA.gov, The StarChild Team.

 Women Computers at Harvard Observatory