As enigmatic and contradictory as far West Texas has always been, it is nevertheless surprising to learn that in 1925 its desert germinated a slender but vibrant shoot of the Harlem Renaissance. Isolated on the U.S.-Mexico border, far from any metropolitan African-American community or literary influences, Bernice Love Wiggins, a perceptive young poet, self-published her first, apparently only, book of poetry. One of only a handful of black writers...