瑞佛迪‧強森 (Reverdy Johnson) 生於1796年5月21日
13號憲法修正案通過後,奴隸制度才被宣告非法而遭到廢除
出處: "Reynolds Political Map of the United States, designed to exhibit the comparative Area of the free and slave states." 1856. Geography and Map Division, African American Mosaic, Library of Congress.