Why My Shades Are Usually Drawn:

This print is by Ron Hamilton, who goes by the name Hupquatchew when he signs prints. 1972.

mint condition at a museum

not mint condition, on ebay, paper massively deteriorated, probably due to light exposure. UV kills.

Man, looking at this print makes me sad. It's only ~40 years old. This is probably from back before they used acid-free paper.

Update: I emailed the print maker, who owns Pacific Editions Limited in Victoria BC, and he thinks the print has been damaged by "fungal foxing" -- caused by storing it in a wet, unheated locale. Light is bad, but usually leads to an even color discoloration.

While I'm at it. Maltwood gallery page for Ron Hamilton, Tim Paul, Frank Charlie, Patrick Amos, Joe David, Art Thompson, Bill Reid, Roy Henry Vickers, i could go on.... and will at some point