Marie Edwards Johnson-Calloway (April 10, 1920-February 11, 2018) was an American artist who worked in the fields of painting and mixed-media assemblage.
Biography on Wikipedia: https://en.wikipedia.org/wiki/Marie_E._Johnson-Calloway

School Crossing Guard by Marie Johnson-Calloway
1970s / Mixed media on board / 65″x55″ / Hammer Museum, Los Angeles, CA

Marie Johnson-Calloway on Artnet: http://www.artnet.com/artists/marie-johnson-calloway/

Further reading:
https://www.moadsf.org/exhibition/marie-johnson-calloway-legacy-color/
https://hammer.ucla.edu/now-dig-this/artists/marie-johnson-calloway
https://blackartstory.org/2020/11/24/profile-marie-e-johnson-calloway-1920-2018/