Obituary in Times London paying respect to Constant.
Documentation
Pages

Constant 1920-2005, meer dan Cobra
2005
Column by Max Arian after Constant passes away August 1st, 2005.

Kunstenaar Constant Nieuwenhuys overleden
2005
Obituary after Constant passes away on August 1st, 2005.

Fantasy kingdom
2004
Article in The Times about Sir Charles Cockerell. Reference to Constant in paragraph nine.

Constants krasserige wezens
2004
Review of the exhibition Constant, Een keuze uit het grafisch oeuvre at the Cobra museum of modern art in Amstelveen.

Constant Nieuwenhuys-Constant Graveur
2004
Announcement of the exhibition Constant Graveur at the Cobra Museum of Modern Art Amstelveen.

Frank van Ros
Aankondiging kunst Cobra Museum
2004
Interview with Constant regarding his exhibition Constant | Een keuze uit het grafisch oeuvre at Cobra Museum voor Moderne Kunst.