This stamp promotes the concept of love.
This stamp acknowledges the contributions of photography to communication and understanding. (I need to retake this picture so the stamp is orientated correctly.)
This stamp commemorates the 50th anniversary of the first contract airmail flights. Those first flights went from Dearborn, Michigan, to Cleveland, Ohio, and from Pasco, Washington, to Elko, Nevada.
This stamp commemorates the 100th anniversary of the first telephone call made by Alexander Graham Bell.
This stamp commemorates the 200th anniversary of the USPS by showing a modern communications satellite.