Day 28 of Women’s History Month features food editor Mary Hart. The food column “Ask Mary” was written by “Mary Hart,” although her last name wasn’t Hart; it was Sorenson. Sorenson wrote under the pen name “Mary Hart” when she went to work on the women’s pages at the Minneapolis Tribune in 1945, after graduating from the the University of Minnesota. Her name then was Mary Engelhart, and the editors shortened it to Mary Hart, which they copyrighted. They planned to use that name for all the other women who, they assumed, would succeed her — and each other — every few years. (This was not unusual for the time.)…