1974 USPS mint set in original envelope. Glossy commemorative stamp folder contains all 16 stamps/blocks of stamps including Peter Max “Preserve the Environment” stamp symbolizing and commemorating the ecological theme of the Expo 1974 World’s Fair. Stamp has Max bell bottomed Max man running over a hill with cloud in the background and large bird (along with other decorations). Tough to find this one uncancelled / at all. Stamps are not all in correct positions and they have become attached to the black paper backing (that could easily be cut for other framing. One block of stamps is in a separate marked envelope on cardboard. Exc++.