BETTYE KEARSE is a retired pediatric physician and geneticist. Her commentary "Our Family Tree Searches for Branches" appeared in the Boston Herald. "Destination Jim Crow" was published in River Teeth, listed as notable in The Best American Essays 2014, and nominated for the 2015 Pushcart Prize. "Mammy Warriors" is included in the anthology Black Lives Have Always Mattered. Her research for The Other Madisons was recently covered in the Washington Post. She lives in New Mexico.