Sidney Harry Riesenberg was an illustrator and artist who lived in Yonkers, New York, and commuted to his studio in New York City by train. He was known as a professional illustrator for his posters for the United States Marine Corps and the Liberty bond programs, for his illustrations for book covers, magazines, and for oil paintings of diverse subjects. He retired from his professional work and dedicated his full-time energy to painting fine arts and teaching. In 1937 he began spending summers in Rockport, Massachusetts, where he painted scenes of the small fishing town. He was active in the Rockport Art Association, teaching oil painting and participating in water color figure painting classes.