Newscopy: Three prominent religious leaders will speak at a Conference on Religion and Race Sept. 4-5 at the University of San Francisco. They are the Rev. George Higgins, director of the National Catholic Welfare Service; Dr. Edler G. Hawkins, pastor of St. Augustine Presbyterian Church in New York and past moderator of the Presbytery of New York, and Rabbi Richard Hirsch of Washington, D. C., director of the Religious Action Center of the Union of American Hebrew Congregations. The Rev. Hamilton Boswell is general chairman of the invitational conferences, expected to be attended by 500 men and women. The conference, sponsored by the San Francisco Council of Churches, the Catholic Archdiocese of San Francisco and the Board of Rabbis of Northern California, will attempt to enlist continued support of religious groups in the fight against racial and religious prejudice and discrimination.