N. Johanssen
1917 to 1921
- Title
- N. Johanssen
- Collection
- George Ellery Hale Papers
- Series
- Director’s Files of the Mount Wilson Observatory
- Identifier
- HaleGE_10_00_160_06
- Dates
- 1917 to 1921
- Extents
- 41 pages
- Existence and Location of Copies
- This folder is represented in the microfilm edition of the Hale Papers by reel 91, frames 564 to 604.