World Stamp Catalogue/United States/1970s

1970s
 Image:Usstamp-edgar lee masters.jpg|Edgar Lee Masters, 6¢, 1970 Image:Usstamp-save-our.jpg|Save our Cities, Soil, Air, Water, 6¢, 1970 Image:Stamp-south-carolina.jpg|South Carolina, 6¢, 1970 Image:Lovestamp.png|LOVE Stamp, 8c, 1973, designed by Robert Indiana Image:RobertFrost.jpg|Robert Frost, 10¢, 1974 