- E-bookOn the Philosophy of Discovery, Chapters Historical and CriticalWilliam Whewell
- E-bookThe Plurality of WorldsEdward Hitchcock
- E-bookAstronomy and General Physics Considered with Reference to Natural TheologyWilliam Whewell
- E-bookThe Plurality of WorldsWilliam Whewell
- E-bookThe Plurality of WorldsWilliam Whewell
- E-bookAstronomy and General Physics Considered with Reference to Natural TheologyWilliam Whewell
- E-bookOn the Philosophy of Discovery, Chapters Historical and CriticalWilliam Whewell