Used First Day Covers

Honoring Thomas G. Masaryk - Champion of Liberty Block of Stamps First Day Cover

American Credo Series First Day Cover

American Credo Series Block of Stamps First Day Cover

Water Conservation First Day Cover

25c Air Mail Postage Stamp 1960 First Day Cover

25c Air Mail Postage Stamp 1960 Block of Stamps First Day Cover

American Credo Series First Day Cover

Employ the Physically Handicapped First Day Cover

World Congress International Society for the Welfare of Cripples Block of Stamps First Day Cover

10c Air Mail Stamp Series of 1960 Block of Stamps First Day Cover

SEATO South-East Asia Treaty Organization First Day Cover

SEATO - South-East Asia Treaty Organization Block of Stamps First Day Cover

Honoring the Women of America First Day Cover

Honoring the Women of America Block of Stamps First Day Cover

1 1/4¢ Coil Stamp 1960 Block of Stamps First Day Cover

Regular Postage Series of 1960 Block of Stamps First Day Cover

Honoring the 50 Star American Flag, Independence Day July 4, 1960 First Day Cover

Honoring the 50 Star American Flag, Independence Day July 4, 1960 Block of Stamps First Day Cover

100th Anniversary of the Pony Express, 1860-1960 First Day Cover

7¢ Air Mail Stamp 1960 First Day Cover

7¢ Air Mail Stamp 1969 Block of Stamps First Day Cover

7¢ Air Mail Booklet Block of Stamps First Day Cover

Commemorating the Fifth World Forestry Congress, Seattle, Washington 1960 First Day Cover

Commemorating the Fifth World Forestry Congress Block of Stamps First Day Cover