Books in Astronomy (sorted by popularity)
- Are the Planets Inhabited? E. Walter Maunder 124 downloads
- Recreations in Astronomy Henry White Warren 113 downloads
- Le Système Solaire se mouvant (French) August Tischner 111 downloads
- Sir William Herschel: His Life and Works Edward S. Holden 95 downloads
- Half-hours with the Telescope Richard A. Proctor 89 downloads
- Astronomical Instruments and Accessories William Gaertner and Company 86 downloads
- The Future of Astronomy Edward C. Pickering 82 downloads
- Other Worlds Garrett Putman Serviss 81 downloads
- Watchers of the Sky Alfred Noyes 78 downloads
- Side-Lights on Astronomy and Kindred Fields of Popular Science Simon Newcomb 65 downloads
- Publications of the Astronomical Society of the Pacific, Volume 1 Astronomical Society of the Pacific 40 downloads
- The Tides and Kindred Phenomena in the Solar System Sir George Howard Darwin 39 downloads
- Scientific Papers by Sir George Howard Darwin. Volume V. Supplementary Volume Sir George Howard Darwin 29 downloads