Ciba-Geigy Dyestuffs History
ColorantsHistory.Org
Trade Ad by Ciba-Geigy, American Dyestuff Reporter-November 1992
Geigy-A Historic Dyestuff Company
The Chemistry and Manufacture of Vat Dyes (Adobe PDF File)
Technical Books and Research Magazines Published by Ciba 1941-1968.  
This collection was donated to the Chemical Heritage Foundation.
Cincinnati Chemical Works