I've discovered two on-line publications covering the history of anti-reflection lens coating. These are on the web site of the Vacuum Coaters Association at http://www.svc.org The specific URL is: http://www.svc.org/H/H_References.html A warning, both are quite large files, one is 15Mb. There is also a general history of vacuum coating on the same site at: http://www.svc.org/H/H_HistoryArticle.html --- Richard Knoppow Los Angeles, CA, USA dickburk@xxxxxxxxxxxxx --- Rollei List - Post to rollei_list@xxxxxxxxxxxxx - Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe' in the subject field OR by logging into www.freelists.org - Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with 'unsubscribe' in the subject field OR by logging into www.freelists.org - Online, searchable archives are available at //www.freelists.org/archives/rollei_list