Space & PhysicsJohn D. Hooker and the One Hundred-inch ReflectorA Business Man Who Took an Interest in AstronomyBy Mary Proctor on June 24, 1911AdvertisementABOUT THE AUTHOR(S)Recent Articles by Mary ProctorThe Latest Photograph of the Planet MarsVacant Regions in the Milky WayTotal Eclipse of the Sun in January, 1907