Mrs. Mabel Hart Zander. Services for Mrs. Mabel Hart Zander, 74 years old, descendant of John Hart of New Jersey, one of the signers of the Declaration of Independence, and widow of Edward William Zander, will know Chicago real estate man who died in 1912, will be held at 2 p.m. tomorrow in the First Methodist church, Glen Ellyn. Burial will be in Rosehill cemetery. Mrs. Zander died Tuesday in her home at 550 Hill avenue, Glen Ellyn. Surviving are two daughters, Miss Ethel Zander and Mrs. Arno C. Wagner, and two grandchildren.