National Observatory (North Front).
Photographer: Bryant & Smith
Subjects: Washington (D.C.), Astronomical observatories Collection: NYPL Digital Collections: Robert N. Dennis [From The New York Public Library] |
U.S. Observatory.
Photographer: Bell & Bro. (Washington, D.C.)
Subjects: Washington (D.C.), Horses, Astronomical observatories Collection: NYPL Digital Collections: Robert N. Dennis [From The New York Public Library] |
Vassar College Observatory, Poughkeepsie, N.Y.
Publisher: Littleton View Co.
Subjects: New York (State), Poughkeepsie (N.Y.), Astronomical observatories Collection: NYPL Digital Collections: Robert N. Dennis [From The New York Public Library] |
The astronomical observatory, Cambridge, Mass. |
Lick Observatory, Mount Hamilton, California. |
Lick Observatory, Mount Hamilton, California. |
