ManyInsurance.com contains listings to browse for various insurance information such as life insurance, automotive insurance, homeowner insurance, mortgage insurance, specialty insurance, dental insurance, bond insurance.
Michigan Retailers Association
The unified voice of Michigan's retail industry. They offer a wide range of insurance such as health, life and dental insurance.
http://www.retailers.com/
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Michigan Specialty Insurance Agency
Their focus is to work with social service agencies, non-profit organizations, businesses and individuals in developing insurance and employee benefit programs.