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Re:Medieval books reveal the extreme methods with which arti... by danielam on Thursday February 16, 2017 @02:07PM (#13662608)
There's a mention of Mexican cochineal, but nothing about what it supplanted in Europe, the Polish cochineal, which was traded widely in Europe.

https://en.wikipedia.org/wiki/Polish_cochineal

I also found this bit from the MET:

https://issuu.com/metmuseum/docs/cochineal_winter_2010_bulle...

Re:Medieval books reveal the extreme methods with which arti... by analog31 on Thursday February 16, 2017 @02:33PM (#13662842)
I don't remember the source, but apparently one of the many analyses of Stradivarius violins concluded that one of his red pigments was from the Americas.