Felten became known for his posters and book illustrations during the 1930s to 1950s. Some of his posters were published by Davis Blue Artwork, a company founded by Robert Blue and Brian Davis.[citation needed]
Felten provided illustrations for the Ives Washburn 1931 edition of Baudelaire's translated poems The Flowers of Evil.[4]
A Major Felten charcoal illustration was used as the basis of the design on a folding screen in a Darien, Connecticut, home featured in a 1936 article in Architecture Magazine.[2]
In 1938, Felten produced illustrations of dancers Barton Mumaw[5] and Ted Shawn.[1] He produced posters for the Jacob's Pillow dance festival, and maintained correspondance with the organization from 1947 to 1971.[6]
Felten produced the cover illustration of the brochure for the 1940 Railroads at the New York World's Fair by the Eastern Railroad Presidents Conference.[7][8]