Christo und Jeanne-Claude, 1994 volume 1, page 70 (Jeanne-Claude, born de Guillebon, born 6/13/1935, Casablanca)
WWW Christo und Jeanne-Claude home page, May 7, 2002 Biography (born Jeanne-Claude de Guillebon, June 13, 1935, Casablanca, of a French military family; shares birthday with co-artist Christo)
New York times WWW site, November 20, 2009 (in obituary published Novovember 19: Jeanne-Claude; born Jeanne-Claude Denat de Guillebon, June 13, 1935, Casablanca; died Wednesday [November 18, 2009], Manhattan, aged 74; collaborated with her husband, Christo, on dozens of environmental art projects, notably the wrapping of the Pont Neuf in Paris and the Reichstag in Berlin and the installation of 7,503 vinyl gates with saffron-colored nylon panels in Central Park)