No Photoshop -- Another scan of an old 8x10 print from about 20 years ago. From an original black & white negative, an 8x10 transparency on ultra-high-contrast Kodalith sheet film was created. This was then contact printed onto 8x10 paper.
The "snow" is actually black pepper, shaken onto the film during the contact exposure. (For stars I sometimes used salt).
Part of
New Scans of Old Prints.