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https://www.centralparknyc.org/blog/seneca-village

smolletton Hilma af Klint was the first abstract painter

There's also https://dangerousminds.net/comments/meet_the_swedish_mystic_....

smolletton The story of the 1968 “Fuck the Draft” poster

This is the second part of a series. The first part is about Kiyoshi Kuromiya who was kind of incredible: born in an internment camp, looked after Martin Luther King's children (apparently?), wrote a book with Buckminster Fuller, published a gay rights magazine in 1970:

http://dangerousminds.net/comments/fuck_the_draft_the_amazin...

His NYT obituary omits the poster, but adds that he was a nationally ranked Scrabble player:

http://www.nytimes.com/2000/05/28/us/kiyoshi-kuromiya-57-fig...