Turning a New Leaf at George Eastman House

PINA is a standard reference used in classifying dye types. Dyes were given PINA numbrs to distinguish them by class and color, but IDK the methodology used. It is not very common today but is still used. PINA type was merely an early version IIRC.

Capstaff's original work is fully documented in the KRL library where all notebooks are kept including mine and George Eastman's. IDK who is permitted access. I have been told I have access to parts of the library but most of even my own work is off limits to me now.

PE

That's interesting about PINA classifications. But Friedman wrote a long rant (basically) on this topic in the mid 40's and I'm sure he would've known about this classification scheme. In fact I think it's in some of the Am. Photo papers I posted on the dye-imbibition article/thread.

Perhaps it's a case of 'chicken or the egg'... that is, pinatype was a clever name to denote the use of dyes in the process.