File:City Mail Delivery 5c 1963 issue U.S. stamp.jpg - Wikimedia Commons

Stamps of the United States - Wikimedia Commons

Stamps of the United States - Wikimedia Commons

Postage stamps - Wikimedia Commons

MailingToSoverignStates PDF, PDF, United States Postal Service

1964 Stamps

File:Red Cross Centenary 5c 1963 issue U.S. stamp.jpg - Wikimedia Commons

Canada

Category:1963 - Wikimedia Commons

File:American Flag 5c 1963 issue U.S. stamp.jpg - Wikipedia