[Gimp-user] color profiles and gimp-image-convert-color-profile

[Carol Spears <carol spears gmail com>]

I read something recently about a color profile from 1966.  It made me
chuckle and think about early US-tv and dramatic books of black and
white photography.

Then, gimp-9 or 10 was released and I am going to have to reacquaint
myself with some words or learn about them for the first time before I
am going to be able to convert rgb to grayscale via any script
available.

Any body got a link or a book recommendation or a paper to read?

Carol