First Day Covers

Commemorating 11th International Botanical Congress Seattle, Washington First Day Cover

11th International Botanical Congress First Day Cover

Commemorating 11th International Botanical Congress Block of Stamps First Day Cover

150th Anniversary of Dartmouth College Case First Day Cover

150th Anniversary of Dartmouth College Case Block of Stamps First Day Cover

Centennial of Baseball First Day Cover

Centennial of Baseball 1869-1969 Block of Stamps First Day Cover

100 Years of Intercollegiate Football First Day Cover

Season&#039;s Greetings - Christmas 1969 First Day Cover

Season&#039;s Greetings Christmas 1969, A Winter Sunday Block of Stamps First Day Cover

50th Anniversary National Easter Seal Society First Day Cover

50th Anniversary National Easter Seal Society Block of Stamps First Day Cover

45¢ Special Delivery Postage Stamp 1969 First Day Cover

Honoring William M. Harnett, 1848-1892 First Day Cover

Natural History Series of 1970 First Day Cover

Natural History Series of 1970 First Day Cover

Natural History - Series of 1970 First Day Cover

Natural History Series of 1970 First Day Cover

150th Anniversary Maine Statehood 1820-1970 First Day Cover

Wildlife Conservation 1970 First Day Cover

6c Dwight D. Eisenhower Regular Issue Series of 1970 First Day Cover

Dwight D. Eisenhower 6¢ Coil Stamp Series of 1970 First Day Cover

Dwight D. Eisenhower 6¢ Booklet Pane Block of Stamps First Day Cover

American Flag First Day Cover