The stamps featuring boxing icon Muhammad Ali will debut on Thursday.
Live coverage of the funeral of Muhammad Ali in Louisville, Kentucky from ABC News.
See photos as thousands attend the memorial and procession to lay Muhammad Ali to rest in his hometown of Louisville, Ky.
It was a Cary man's admiration of Muhammad Ali that moved him to gather five friends from the Triangle and drive to Louisville on Wednesday night. It took them 10 hours to get there; just in time for Thursday's Islamic prayer service.
Some 14,000 people attended a traditional Muslim prayer service at Freedom Hall where Muhammad Ali was remembered Thursday as a global icon and world leader.
Some ticket holders for Muhammad Ali's Friday memorial service immediately looked to cash in on the free tickets, going online and offering to sell theirs to the star-studded event.