For those wondering about the criteria for the Stamp nomination.
1.Start at least three years before a significant anniversary of your nominee's birth or major accomplishment. The Postal Service generally issues commemoratives on such anniversaries, and it takes that long for the CSAC to approve a nomination and commission art for the stamp.
2. Make sure your nominee meets the CSAC's criteria, a 14-point list under development since the 1970s. One of the top criteria is that the nominee must be dead, for at least two years, so she/he will have been dead at least five years before the stamp is issued. The only exception is a memorial stamp issued on the first birthday after the death of a former president of the United States. The nominee must also not have been commemorated with a stamp within 50 years.
So this is the beginning of the process!