William Loren Katz (1927-2019) was born in Brooklyn and grew up in Greenwich Village in a progressive family dedicated to social justice. After serving in WWII and attending college on the GI Bill, he became a teacher in New York for many years. The author of more than 40 books, many for younger readers, he documented the often overlooked contributions of black and indigenous people through history. Through his scholarship and educational outreach, he helped to refashion social studies curriculums across the country, encouraging the histories of minorities and women to be part of American history courses rather than siloed into their own fields of study. In one of his best-known books, Black Indians, he wrote, “I have been humbled by the awesome task of rejecting bias. I have never sought bland neutrality and have consoled myself that unbiased history has yet to be written.”