A most unusual childbearing event in medical history occurred in Lima, Peru on this date 75 years ago, which in 1939 happened to be Mothers Day. A boy was delivered by caesarian section, but that’s not uncommon. What was unique is that the mother, Lina Medina, was just over five and a half years old. For a time, this extraordinary story was believed to be a hoax, but it was quickly confirmed. How the girl was impregnated has never been established, as the mother never spoke of it. She had other children in more tradition childbearing years, and reportedly is still living in Peru at age 80. While not as medically astonishing, in the U.S. today, there are about a quarter million births every year by women between the ages of 15 and 19, over four fifths of them unmarried. Profile America is in its17th year as a public service of the U.S. Census Bureau.