She lives half-a-block from Warner Chapel on Comstock Avenue.   The two story home was built by her father after moving to Winter Park in the late 1920s from North Florida.   When Mrs. Johnson was a child she often went with her father to a public planting area across Fairbanks Avenue, now the site of Holler Chevrolet.   At the time, many Westside residents supplemented their food supply by growing their own produce.   Mrs. Johnson's family migration from the rural South to Winter Park is typical of many African-Americans looking for a better future prior to World War II.