* per the Smithsonian American Art Museum
Mabel Wellington Jack (1890 or 1899-1970) was an American printmaker. Not much seems to be known about her aside from lithographs published by the Works Progress Administration’s Federal Art Project.
Biography on Wikipedia: https://en.wikipedia.org/wiki/Mabel_Wellington_Jack
Hoboken Ferry by Mabel Wellington Jack
c.1935-42 / Lithograph / Sheet size: 17-1/8×11-1/2″ / Private collection
Mabel Wellington Jack on Artnet: http://www.artnet.com/artists/mabel-wellington-jack/
Helen Hardin (May 28, 1943-June 9, 1984) was a painter and printmaker whose work featured abstracted Native American iconography. Her mother was painter Pablita Velarde (1918-2006) and her daughter was the artist Margarete Bagshaw (1964-2015).
Biography on Wikipedia: https://en.wikipedia.org/wiki/Helen_Hardin
Medicine Woman by Helen Hardin
c.1981 / 4-color copper plate lithograph / 24″x18″ / Various private collections
Helen Hardin on Artnet: http://www.artnet.com/artists/helen-hardin/