Winthrop Jordan, one of the most honored of US historians, wrote about racial mixing ageneration before there was a field of mixed race studies. At the time of his death, he left an unfinished manuscript: “Historical Origins of the One-Drop Racial Rule in the United States.” For this inaugural issue of the JCMRS, Jordan’s former student Paul Spickard, himself a foundational scholar of multiracial studies from the first wave of scholarship in the late 1980s and early 1990s, has edited Jordan’s final article.