| American Lung Assoc CHRISTMAS SEAL STAMPS - Sheet 1988 |
| American Lung Assoc CHRISTMAS SEAL STAMPS Sheet 1993 |
| American Lung Assoc CHRISTMAS SEAL STAMPS Sheet 1990 |
| 1973 AMERICAN LUNG ASSOC CHRISTMAS SEALS - FULL SHEET |
| 1964 AMERICAN LUNG ASSOC CHRISTMAS SEALS - FULL SHEET |
| 1970 AMERICAN LUNG ASSOC CHRISTMAS SEALS - FULL SHEET |
| 1971 AMERICAN LUNG ASSOC CHRISTMAS SEALS - FULL SHEET |
| 1933 AMERICAN LUNG ASSOC CHRISTMAS SEALS - FULL SHEET |
| 1945 AMERICAN LUNG ASSOC CHRISTMAS SEALS - FULL SHEET |
| 1980 AMERICAN LUNG ASSOC CHRISTMAS SEALS - FULL SHEET |
| 1982 AMERICAN LUNG ASSOC CHRISTMAS SEALS - FULL SHEET |
| 1983 AMERICAN LUNG ASSOC CHRISTMAS SEALS - FULL SHEET |
| 1966 AMERICAN LUNG ASSOC CHRISTMAS SEALS - FULL SHEET |
| 1981 AMERICAN LUNG ASSOC CHRISTMAS SEALS - FULL SHEET |
| 1960 AMERICAN LUNG ASSOC CHRISTMAS SEALS - FULL SHEET |
| 1941 AMERICAN LUNG ASSOC CHRISTMAS SEALS - FULL SHEET |
| 1951 AMERICAN LUNG ASSOC CHRISTMAS SEALS - FULL SHEET |
| 1977 AMERICAN LUNG ASSOC CHRISTMAS SEALS - FULL SHEET |
| 1985 AMERICAN LUNG ASSOC CHRISTMAS SEALS - FULL SHEET |
| 1947 AMERICAN LUNG ASSOC CHRISTMAS SEALS - FULL SHEET |
| 1943 AMERICAN LUNG ASSOC CHRISTMAS SEALS - FULL SHEET |
| 1972 AMERICAN LUNG ASSOC CHRISTMAS SEALS - FULL SHEET |
| 1942 AMERICAN LUNG ASSOC CHRISTMAS SEALS - FULL SHEET |