Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Cecilia Payne-Gaposchkin
Agnes M. Clerke
J. S. Plaskett
Harlow Shapley and Cecilia Payne-Gaposchkin
These books are free to read. Each is in the public domain in the United States; check your own country's rules before you copy or share one.
