Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Marcus Tullius Cicero
Isaac Newton
Boethius
Horace
Apicius
Ludovico Maria Sinistrari
Cornelius Tacitus
Vitruvius Pollio
John Caius
Carl von Linné
Nicolas Chorier, Luisa Sigea, and Johannes van Meurs
Andrea Pozzo
Leonhard Rauwolf and John Ray
John Gower
Charles Louis L'Héritier de Brutelle
Herman Boerhaave
active approximately 150-175 Pausanias
Diego Collado
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.