Papers Relating to "The Offspring of Mothers over Forty-Five" Typescript copy of "The Offspring of Mothers over Forty-Five", two copies of a note of acknowledgement from the author(s), notes on the paper by Haldane in response to a request from Penrose, May 1955, duplicate copies of tables and figures, and manuscript notes on obstetric information and data on congenital disorders. 1950s