Mary Lee Abbott (July 27, 1921-August 23, 2019) was an American abstract expressionist painter and one of three female members of the Artist’s Club in New York.
Biography on Wikipedia: https://en.wikipedia.org/wiki/Mary_Abbott_(artist)

All Green by Mary Abbott
c. 1954 / Oil on linen / 49″x45-1/8″ / Denver Art Museum, Colorado

Mary Abbott on Artnet: http://www.artnet.com/artists/mary-abbott/

Further reading:
https://www.huffpost.com/entry/mary-abbott-a-wake-up-cal_b_1389281?ec_carp=7611884569565380991
https://www.re-thinkingthefuture.com/architectural-community/a3878-life-of-an-artist-mary-abbott/
https://www.washingtonpost.com/local/obituaries/mary-abbott-abstract-expressionist-with-an-unsung-influence-dies-at-98/2019/10/02/0980fe82-e51f-11e9-a6e8-8759c5c7f608_story.html