Books in Astronomy (sorted by popularity)
- Recreations in Astronomy Henry White Warren 141 downloads
- A Popular History of Astronomy During the Nineteenth Century Agnes M. Clerke 135 downloads
- The Martyrs of Science, or, The lives of Galileo, Tycho Brahe, and Kepler David Brewster 132 downloads
- Watchers of the Sky Alfred Noyes 125 downloads
- Half-hours with the Telescope Richard A. Proctor 113 downloads
- The gradual acceptance of the Copernican theory of the universe Dorothy Stimson 109 downloads
- Le Système Solaire se mouvant (French) August Tischner 104 downloads
- The Future of Astronomy Edward C. Pickering 94 downloads
- Side-Lights on Astronomy and Kindred Fields of Popular Science Simon Newcomb 86 downloads
- Astronomical Instruments and Accessories William Gaertner and Company 72 downloads
- The Tides and Kindred Phenomena in the Solar System Sir George Howard Darwin 69 downloads
- Scientific Papers by Sir George Howard Darwin. Volume V. Supplementary Volume Sir George Howard Darwin 68 downloads
- Publications of the Astronomical Society of the Pacific, Volume 1 Astronomical Society of the Pacific 39 downloads