#UC391967 13c Air Post Envelope, red & dark blue
$1.75- $3.20 #UC351961 11c Air Post Envelope, red & blue
$1.75- $2.50 #UC361962 8c Air Post Envelope, red
$1.75- $2.50 #UC371965-67 8c Air Post Envelope, red
$1.75- $2.50 #UC171947 5c Air Post Envelope, carmine
$2.50- $4.50 #UC341958 7c Air Post Envelope, carmine
$1.75- $2.50 #UC251956 6c Air Post Envelope, red
$1.75- $3.20 #UC401968 10c Air Post Envelope, red
$1.75- $2.50 #UC331958 7c Air Post Envelope, blue
$1.75- $2.50 #UC32a1958-59 10c Air Post Envelope, blue & red
$2.00 #UC561983 30c Air Post Envelope - World Communications Year
$1.75 #UY472008 27c Corinthian Capitol
$2.15- $2.75 #U5431960 4c Pony Express Centennial Issue Stamped Envelope, brown
$1.75 #U548A1.6 1969 LIBERTY BELL
$1.75- $2.50 #UC141946 5c Air Post Envelope, Carmine
$2.25 #UC531980 30c Air Post Envelope - Tour the United States
$2.00- $3.20 #UXC171978 21c Jenny
$1.33- $1.75 #C721968 10c 50 Stars
$0.15- $60.00 #UC451971 10c + 1c surcharge Air Post Envelope, red
$6.25 #UC421968 13c Air Post Envelope - Human Rights Year
$1.75- $3.20