Robert R. Williams specializes in portraits in pastel and oil and is known for the realistic yet vibrant skin tones he achieves in his pastels. He has completed hundreds of charcoal portraits done on location at street fairs and art fairs throughout the mid-west and has completed many commissioned pastels and oils from his studio in the Box Factory for the Arts in St. Joseph, MI where he has been teaching portrait drawing and painting for the last 20 years. 

He has also taught pastel workshops at the Buchanan Art Center at 17 West Front Street in Buchanan, Michigan (in 2006) and Studio Arts Center at 807 Lincoln Way West in South Bend, Indiana (in 2006). Besides teaching at the Box Factory, Robert also has taught portrait classes at the Studio Arts Center and the Southern Shores Art Association in Michigan City in charcoal, pastel, and oil.