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Subject
- Astronomy.[remove]7
- Astronomical observatories.2
- Science.2
- Apennines (Italy)1
- Astronomical instruments.1
- Balloons, Sounding.1
- Battery Park (New York, N.Y.)1
- Celestial globes.1
- Compton, Arthur Holly, 1892-1962.1
- Eye--Protection.1
- Eyeglasses, Protective.1
- Lick Observatory.1
- Ligurian Alps (Italy)1
- Menzel, Donald H. (Donald Howard), 1901-1976.1
- Meteorology.1
- Milky Way.1
- Moon.1
- Moore, J. H. (Joseph Haines), 1878-1949.1
- Physics.1
- Religion and culture.1