Walt Wittman was a supporter of the arts, especially those with leftist expressions. He was close to Ad Reinhardt, an artist and cartoonist known for his incisive cartoons of current event before and leading up the U.S. joining WWII. Jeanette and Walt were also friends with Rockwell Kent and Lynd Ward, who created God’s Man one of the first graphic novels–black and white woodcuts with no text. Jane Wittman Vandebogart collected Lynd Ward books illustrated or written by him and his wife May McNeer.
Walt and his wife Jeannette donated papers and artwork relating to Ad Reinhardt to the Metropolitan Museum of Art in 1992. Walt was invited to write the biographical sketch for Reinhardt for the museum which was circulated during a Reinhardt exhibit.