The founding of the practice in 1852 .
Parks was the 31st person , the first American who had not been a U.S. government official , and the second private person ( after the French planner Pierre L'Enfant ) to be honored in this way .
Since the founding of the practice in 1852 , Parks was the 31st person , the first American who had not been a U.S. government official , and the second private person ( after the French planner Pierre L'Enfant ) to be honored in this way .