The Racial Harmony Committee and Office of Black Catholics of the Diocese of Baton Rouge will celebrate a Black History Month Mass Sunday, Feb. 4, 1:30 p.m., at St. Joseph Cathedral, Fourth and Main Sts., Baton Rouge. Bishop Michael G. Duca will preside and Father Gregory C. Chisholm, SSJ, rector of the Loyola Jesuit Community in Baltimore, Maryland, will be the homilist. The Diocesan Gospel Choir will provide music.