Hsia, David Yi-Yung Correspondence including an application to study at the Galton Laboratory with enclosed curriculum vitae and bibliography, a Memorandum to the American Academy of Pediatrics on Phenylketonuria with a bibliography and accompanying letter, and a letter concerning birth weights of children with cystic fibrosis, including a letter from H David Mosier to Richard W Lippman on phenylketonuric patients. Also, a letter on 5-hydroxy tryptophan decarboxylase in phenylketonuria, a request to Penrose to write a short introduction to Hsia's book Human Developmental Genetics, with enclosed introduction and some notes on the text, plus a telegram telling of Hsia's death in a car crash. 1955