5-inch slab cut from 200-inch mirror plug
1937 March 5
- Title
- 5-inch slab cut from 200-inch mirror plug
- Collection
- Caltech Photographs
- Series
- Photographs of Academic Divisions and Departments
- Sub-Series
- Astronomy (Astrophysics)
- Dates
- 1937 March 5
- Extents
- 1 photographs