The Cailleux Project: Norton Simon Museum in Los Angeles, USA

The name "Cailleux" appears in the provenance of at least nine artworks in the Norton Simon Museum:

Cailleux in the provenance of artworks listed by the German Lost Art Foundation

The German Lost Art Foundation lists 17 artworks that mention Cailleux in the provenance, most of which are "acquisitions for the so-called Führer Museum in Linz".