Interior of the Equatorial Room of Professor Henry Draper’s Observatory at Hastings on Hudson, near New York […] showing the 28 inch Silvered Glass Reflector, the 12 inch Achromatic, and the 5 inch Finder (titre original)

inconnu, “Interior of the Equatorial Room of Professor Henry Draper’s Observatory at Hastings on Hudson, near New York […] showing the 28 inch Silvered Glass Reflector, the 12 inch Achromatic, and the 5 inch Finder (titre original),” Bibliothèque numérique - Observatoire de Paris, consulté le 6 mai 2024, https://bibnum.obspm.fr/ark:/11287/vdQ72.