Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Willis E. Tower, Charles H. Smith, Charles M. Turton, and Thomas D. Cope
Various
Max Planck
Bertha May Clark
E. S. Keene
Lucien Poincaré
Victor Lefebure
Amos A. Fries and Clarence J. West
Sir Arthur Newsholme
William Ramsay
630 downloads
H. de Graffigny
United States. Department of the Army
Mary Somerville
W. Mattieu Williams
Josef Rambousek
J. B. S. Haldane
Homer Greene
Samuel James Manson Auld
Great Britain. Medical Research Committee
William Henry Bragg
Ernest Rutherford and Harriet Brooks
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.