Stockholm. Nationalmuseum. Moderna Museet. Claes Oldenburg, 1966.

Klaes Oldenburg, 1994: portada (Claes Oldenburg [in rom.]) página 1 (b. in 1929 in Stockholm; lives in the US)

Bottle of notes, 1997: portada (Claes Oldenburg) página 57 (b. Stockholm, Jan. 28, 1929; became an American citizen in Dec. 1953)

BL database 10 Aug. 2009 (punto de acceso: Oldenburg, Claes Thure)

Union List of Artists Names Online, sitio web, 2 diciembre 2015: (Oldenburg, Claes (American sculptor, draftsman, and printmaker, born 1929 in Sweden). Names: Oldenburg, Claes; Claes Oldenburg; Oldenburg, Claes Thure; Claes Thure Oldenburg; Oldenberg, Ḳlaʼes) http://www.getty.edu/vow/ULANFullDisplay?find=Claes+Oldenburg&role=&nation=&prev_page=1&subjectid=500029735

RKD artists, sitio web, 2 diciembre 2015: (Claes Oldenburg, male / American, Swedish sculptor, painter. Born: Stockholm, 1929-01-28) https://rkd.nl/explore/artists/60410

Wikipedia, 2 diciembre 2015: (Claes Oldenburg (nacido el 28 de enero de 1929) es un escultor sueco, pionero del Pop Art.) https://es.wikipedia.org/wiki/Claes_Oldenburg