He was born June 2 1866 in Brooklyn New York to Ellen Lock Moore and Josiah B. Penfield. He first studied at New York's Art Students League. He worked under George de Forest Brush who was known for his romantic scenes of American Indian life. He first worked for Harper's Weekly and later became art director. He developed his own unique style of simplified figures with bold outlines in settings free of extraneous detail. He believed A design that needs study is not a poster no matter how well executed. He wrote and published a book titled Holland Sketches which was published by Scribner's in 1907.
Penfield lived in New Rochelle New York a popular art colony among actors writers and artists of the period. The community was most well known for its unprecedented number of prominent American illustrators. He was one of the founding members of the New Rochelle Art Association which was organized in 1912.
His posters were bold and stood out from a distance with great clarity. As artists like Alphonse Mucha Théophile Steinlen and Toulouse-Lautrec popularized the poster in Europe Penfield accomplished the same feat in the United States. For his posters Penfield utilized simple shapes and a limited palette of colors that lent themselves to the primitive methods of reproduction of the era.
