He was known primarily for his portraits of the wealthy and famous, including such notables as Mayor Fiorello La Guardia, Frank Buck, and Will Rogers.

When he turned 16, he falsified his age and joined the Royal Marine Artillery, working with Rolls-Royce armored cars and other weapons in Belgium and France.

During the period 1919-1920 he set up and operated vehicle maintenance depots in Warsaw and Vienna as a member of the Joint British and American Friends Relief Mission.

The list includes Will Rogers, Fiorello La Guardia, Frank Buck, Lincoln Ellsworth, Jimmy Doolittle, Richard E. Byrd, Eddie Rickenbacker, and Charles Lindbergh.

His portraits were hung in Gracie Mansion and the Mitchel Field (Long Island) Officer’s Club and exhibited in many shows.

He also exhibited in Paris and while there, visited the Exposition Internationale des Arts et Techniques dans la Vie Moderne.

In 1938 Lunnon accepted an offer from Max Fleischer, the creator of Betty Boop and the Popeye cartoons, to head up his color laboratory.

He also continued his portraiture, painting Miami notables as well as a series on the Miccosukee tribe that included Buffalo Tiger, a young man who later became their political leader.

Based on his depictions of the Miccosukee, in 1940 he was included on a Works Progress Administration list of notable artists of Social Realism.

In 1943 he was sent to São Paulo as chief engineer to Embry-Riddle Aviation’s effort to support the establishment and expansion of the Brazilian Air Force, the Escola Technica.