Pouring concrete slab of the observing floor of the 200-inch dome
1936 December 20
- Title
- Pouring concrete slab of the observing floor of the 200-inch dome
- Collection
- Caltech Photographs
- Series
- Photographs of Academic Divisions and Departments
- Sub-Series
- Astronomy (Astrophysics)
- Dates
- 1936 December 20
- Extents
- 1 photographs