Men and women should be addressed in equivalent terms whether by their first names, an appropriate title such as Dr., Professor, or Director, or as Mr. or Ms. When Hr. is used, Mr. is the title equivalent and may be used to designate both a married or an unmarried woman.
Children are boys and girls, adults are men and women.
We would like to meet Chief Justice Burger and Mrs. O'Connor. We would like to meet Chief Justice Burger and Justice O'Connor. We would like to meet Mr. Burger and Ms. O'Connor. We would like to meet Warren Burger and Sandra O'Connor. This is Mr. Smith.