Whitaker, Mary E. On Friday, January 18, 1980, at her residence, Mary E. Whitaker, sister-in-law of Clyde R. Whitaker, of Gibson Island, Md. Friends may call at Joseph Gawler's Sons, 513 G Wisconsin ave. at Harrison st. n.w. (parkng on premises), Tuesday, 2 to 4 and 7 to 9 p.m. Mass of Christian Burial will be offered at the Shrine of the Most Blessed Sacrament, Western ave. and Quesada sts. n.w., Wednesday, January 23, 11 a.m. Interment Congressional Cemetery. [Washington Post, January 22, 1980, p. C4]