I, too, have one of those booklets with a looseleaf type of snap connector at the top. I don't know when it was made, fifties probably judging by styles and items.
The types of papers and finishes that were available want to make me cry, and they were so beautiful.
I wish paper companies would mail out finish samples. Sure, everyone knows what glossy (F) is, but after that it is all semantics. And for example, someone here just recently noted that Foma "semi-matte" is "as matte can be."
Does anyone have a source for Kodak Translite?

It was a thin, translucent paper for transmitted light images.