The University of Nebraska, Lincoln's Sheldon Art Gallery is home to the Torn Notebook, 1996.

Within the website for the City of Eindhoven, the Netherlands, there are other links to installation photos, statements and events surrounding the Flying Pins, 2000

The Walker Art Center in Minneapolis, Minnesota, is home to the Spoonbridge and Cherry, 1988.

Hasenkamp is the German firm who assisted with the 2001 installation of Dropped Cone. More photographs of the event are available on their website (in English and German)

"Take a bow: Sculptors Oldenburg and van Bruggen talk about their 'Cupid's Span,'", an article from the Datebook section of the San Francisco Chronicle, December 23, 2002, by Kenneth Baker.

Metropolitan Museum of Art's website includes content relating to the 2002 exhibition, Oldenburg and van Bruggen on the Roof.

Museo d'Arte Contemporanea, Castello di Rivoli, Torino ITALY

Museu Serralves and Fundaçáo de Serralves, including the Serralves Park, Porto, Portugal, where Downliquidambar Lane: Sculpture in the Park was exhibited in 2001.