Each of the 48 states of the United States of America plus several of its territories and the District of Columbia issued individual passenger license plates for 1921.
1921 Alaska license plate
1921 Arizona license plate
1921 Maine license plate
1921 Pennsylvania license plate
Each of the 48 states of the United States of America plus several of its territories and the District of Columbia issued individual passenger license plates for 1924.
1924 Maine license plate