Rogers' work was concerned with "the Great Black Man" theory of history. This theory presented history, specifically black history, as a mural of achievements by prominent black people. Rogers devoted a significant amount of his professional life to unearthing facts about people of African ancestry. He intended these findings to be a refutation of contemporary racist beliefs about the inferiority of blacks. Books such as "100 Amazing Facts about the Negro," "Sex and Race," and "World's Great Men of Color," all described remarkable black people throughout the ages and cited significant achievements of black people. Rogers' first book, "From "Superman" to Man," self-published in 1917