Max's artwork was a part of the psychedelic movement in graphic design. His work was much imitated in commercial illustration in the late 1960s and early 1970s. He works in a multitude of media, including pastels, acrylic, oils, ink, and collage.
Max often uses American icons and symbols in his artwork. He has created paintings of presidents Ford, Carter, Reagan and Bush, in addition to his 100 Clintons—a multiple portrait installation. Additional commissions have included the creation of the first "Preserve the Environment" postage stamp, in honor of the World's Fair in Spokane, WA; border murals at the entry points Canada and Mexico by the US General Services; and exhibitions in over 40 museums and 50 galleries worldwide. He often features images of celebrities, politicians, athletes and sporting events and other pop culture subjects in his artwork.