by Galileo Galilei, Johannes Kepler
The Sidereal Messenger of Galileo Galilei
and a Part of the Preface to Kepler's Dioptrics Containing the Original Account of Galileo's Astronomical Discoveries
en
~2 hours (169K characters)
Project Gutenberg
Produced by David Edwards, Turgut Dincer and the Online Distributed Proofreading Team at http://www.pgdp.net (This file was produced from images generously made available by The Internet Archive)