National Union Fire Insurance Commercial Umbrella Liability Analysis, June 1993 Edition
General Accident Insurance Company Excess Catatrophe Liability Analysis, August-October 1989 Edition
Liberty Mutual Insurance Umbrella Excess Liability Analysis, September 1987
Insurance Services Office Commercial Umbrella Analysis, September 2000 Edition
Lloyd's of London Umbrella Liability Analysis, May 1983 Edition
Nationwide Insurance Commercial Umbrella Liability Analysis, April 1996 Edition
Commercial Union Insurance Umbrella Analysis, May 1987 Edition
Lexington Insurance Umbrella Liability Analysis, December 1990 Edition
Admiral Insurance Analysis, August 1982 Edition
Harbor Insurance Umbrella Analysis, February 1980 Edition