He has studied with Richard Pousette-Dart, Grace Hartigan and Sam Gilliam. Harrington's work has been exhibited at the Hunter Museum of American Art in Chattanooga, Tenn., the Contemporary Artists Center in North Adams, Mass., the Resurgam Gallery in Baltimore and the traveling show Roadmap organized by the Maryland Art Place. He received the highest honors for his work at the Period Gallery in Omaha, Neb. Internationally, his work was exhibited in London, England in the International Juried Affordable Art Exhibition in 2003. His works include Linear Vortex III.