For most U. S. stamps of the last 60 years, FIRST DAY CEREMONY PROGRAMS are a significant component of comprehensive collection. A ceremony is usually held at the official first day city for every stamp and postal stationery item. The city is usually selected for its relationship to the stamp's subject or because a philatelic event is occurring there. People related to the stamp's subject are often invited to attend the ceremony along with political and postal officials. These invited guests are usually listed in the program.