[voltaireodactyl]

This is a fascinating process I’d never heard of before. Thank you for sharing. If there’s any good sources for descriptions of the photo processes like this you’re aware of, I’d be hugely interested as well (maybe write a book :)

[lm28469]

I'd recommend "The practical photographer" by Ernst A. Weber

There are dozens, if not hundreds, of books about photo techniques, it was extremely common back in the days

[hoseja]

I think Technology Connections on YouTube has a recent series on photo development process that mentions this.

[williamscales]

Check out Ansel Adams’ series of books on photography, particularly “The Print”