Isabel Wilkerson, the first black woman to be awarded a Pulitzer Prize in journalism and the first black American to win for individual reporting, is the author of The Warmth of Other Suns, an epic account of the Great Migration. Wilkerson devoted 15 years to the research and writing of the book and interviewed more than 1,200 people. She will speak on Oct. 5 at 7 p.m. in Gasson Hall, room 100, as part of the University’s Lowell Humanities Lecture Series.