Rail grinding assembly
1937 July 20
- Title
- Rail grinding assembly
- Collection
- Caltech Images Collection
- Series
- Academic Divisions and Departments
- Sub-Series
- Astronomy (Astrophysics)
- Identifier
- 10.22.1-31
- Dates
- 1937 July 20
- Extents
- 1 photographs
1937 July 20