Mary DeNeale Morgan was an American plein air painter, especially in watercolor, and printmaker. She was the director the Carmel Summer School of Art sponsored by the Carmel Arts and Crafts Club and a founding member of the Carmel Art Association (CAA) in Carmel-by-the-Sea, California. At age eighteen, she entered the San Francisco Art Institute's California School of Design, where she studied with Virgil Macey Williams, painter and director at CSD. She took some instruction with William Keith, a family friend, of whom she has been called a favorite pupil. Morgan opened a studio in Oakland in 1896, and for a short while also taught art at Oakland High School. In 1907, she had her first solo exhibition, at the Hahn Gallery in Oakland. In 1903, Morgan came to Carmel-by-the-Sea before purchasing a home and studio in 1909 from watercolorist Sydney Yard.