https://petapixel.com/2016/02/16/likely-worlds-first-wet-plate-collodion-photos-snowflakes/
These Are Likely the World's First Wet Plate Collodion Photos of Snowflakes | PetaPixel
Feb 16, 2016 - Want a crazy photography challenge? Try photographing a snowflake. Want to make it even more challenging? Try doing it with the wet plate collodion
wet plate collodionthese are
https://collodion.com/
Wet Plate Collodion Forum
wet plate collodionforum