Here's a nice assortment of 10 different United States First Day Covers from the 1960s and 1970s. All bear monochrome ARTMASTER cachets and are unaddressed.

Details:
Scott # Subject First Day of Issue Postmark
------- ------- --------------------------
1364 6¢ American Indian - Nez Perce Chief Joseph Washington, DC - November 4, 1968
1370 6¢ Grandma Moses - American Artist Washington, DC - May 1, 1969
1373 6¢ California Settlement Bicentennial San Diego, CA - July 16, 1969
1374 6¢ John Wesley Powell - Grand Canyon Page, AZ - August 1, 1969
1380 6¢ Daniel Webster / Dartmouth College Hanover, NH - September 22, 1969
1383 6¢ President Dwight D. Eisenhower Abilene, KS - October 14, 1969
1386 6¢ William M. Harnett - American Artist Boston, MA - December 3, 1969
1753 13¢ French Alliance Bicentennial York, PA - May 4, 1978
1754 13¢ Pap Test - Dr. George Papanicolaou Washington, DC - May 18, 1978
1755 13¢ Jimmie Rodgers - Singing Brakeman Meridian, MS - May 24, 1978

Condition: Neat, clean, and unaddressed. (Please see scans.)

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