It was discovered by historian Henry Louis Gates Jr. in the "African American Lives" documentary miniseries that NASA astronaut Mae Jemison has a significant (above 10%) genetic East Asian admixture. Gates speculated that the intermarriage/relations between migrant Chinese workers during the 19th century and black or African-American slaves or ex-slaves may have contributed to her ethnic genetic make-up. In the 1960s census showed 300 Chinese men married to black women and vice versa also 100. Born to a Japanese mother and an African-American U.S. military personnel father, sisters Titi and Miko Branch, founders of "Miss Jessie's", were pivotal in revolutionizing the black hair care industry, negotiating business deals that opened the door for a new wave of black created and owned hair and beauty product lines to be sold in major retailers including Target, Walmart and Walgreens.