In accordance with the GFDL, this page lists GFDL sources, with publication date, authors, publisher (if applicable), and a network location for "public access to a Transparent copy of the Document".
... of the Nobel Peace Prize
April 16 - Fifi D'Orsay, actress (+ 1983)
April 22 - Robert Oppenheimer, physicist (+ 1967)
May 6 - Harry Martinson, swedish author, ...