His pen and pencil sketch art has been a hobby. He has been known primarily for his pencil portraits of employees and clients. His “Postcards of Amsterdam” series from 2001 began what Don calls his “Postcard” sketches. They feature pencil line drawings he created while traveling. His “Postcards of Morro Bay” series features pencil and ink drawings and watercolors of Morro Bay’s waterfront. In addition to graphite, colored pencils, pastels, and watercolor, Don is experimenting with mixed media with his more recent work. Don is also an amateur photographer and has added photography to his palette.