de Kooning palette

I am looking for help with any published information (journals,
books or online) regarding pigments used by Willem de Kooning.  If
you have any familiarity with these materials especially those used
in media besides oil paint (i.e. enamel, watercolor, gouache) I
would appreciate getting information on where I can locate that
data.  Pigments of particular interest are chrome yellow,
ultramarine and iron oxide pigments.  The main period of interest is
the mid 1950s.

Kenneth J. Smith Ph.D.
Center for Art Materials Analysis, Inc.


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                  Conservation DistList Instance 21:13
                   Distributed: Friday, June 29, 2007
                       Message Id: cdl-21-13-015
                                  ***