May Howard Jackson (September 7, 1877-July 12, 1931) was an American sculptor, artist, and educator.
She was the first known African American woman to attend the Pennsylvania Academy of Fine Arts, receiving a full scholarship.
Biography on Alexander Street website:
https://search.alexanderstreet.com/view/work/bibliographic_entity%7Cbibliographic_details%7C4078817

Portrait Bust of an African by May Howard Jackson
1899 / Bronze / 21″x12-3/4″ / Kinsey African American Art & History Collection (travels)

May Howard Jackson on Artnet: http://www.artnet.com/artists/may-howard-jackson/

Further reading:
https://aaregistry.org/story/a-great-sculptor-ahead-of-her-time-may-jackson/
https://www.culturetype.com/2018/07/21/pafa-acquires-landscape-painting-by-may-howard-jackson-first-african-american-woman-to-attend-the-philadelphia-art-school/
https://www.thekinseycollection.com/the-collection