1980 U.S. Christmas Seal Sheet
1980 Imperforate U.S. Christmas Seals Sheet
1970-80 U.S. Christmas Seals
1970 U.S. Christmas Seal Sheet
1975 U.S. Christmas Seal Sheet
1976 U.S. Christmas Seal Sheet
1977 U.S. Christmas Seal Sheet
1978 U.S. Christmas Seal Sheet
1979 U.S. Christmas Seal Sheet
1980 U.S. Christmas Seal Sheet