1978 31¢ Air Post - Aviation Pioneers: Wright Brothers (2 Varieties, Attached) Mint Pair

U.S. Scott #C91 31¢ Air Post - Aviation Pioneers: Wright Brothers & Plane Mint Single

U.S. Scott #C92 31¢ Air Post - Aviation Pioneers: Wright Brothers, Plane, & Shed Mint Single

U.S. Scott #C95-96 25¢ Air Post - Aviation Pioneers: Wiley Post (2 Varieties, Attached) Mint Pair Varieties include: #C95 - Wiley Post & Plane #C96 - Wiley Post & Large Plane

U.S. Scott #C45 6¢ Air Post - Wright Brothers Mint Single

United States #1732-33 13¢ Captain Cook (2 Varieties, Attached) Mint Sheet of 50 Varieties include: #1732 - Captain Cook (Alaska) x25 #1733 - "Resolution" (Hawaii) x25 *Plate number and position...