Cal Guy, one of Southern Baptists' most influential missions professors and a longtime faculty member at Southwestern Seminary, died July 25, from natural causes. He was 88.

Last year, Southwestern President Paige Patterson led the seminary community in honoring Guy during a special "Cal Guy Day." Patterson presented Guy with gifts in recognition of the retired professor's service to Southern Baptists and his contributions to missiology during his 1946-82 tenure at Southwestern.

Mary Kassian will begin teaching at Southern Seminary during the spring semester of 2006, seminary President R. Albert Mohler Jr. said.

She is a member of the Council on Biblical Manhood and Womanhood (CBMW) and is author of several books on feminism and gender issues, including two recently released works: The Feminine Mistake and In My Father's House.