How do you find an old insurance company named empire insurance company in California?

After much sleuthing on the internet, I found that they have been merged (a few transactions ago) into what is now known as EMC Property and Casualty Company; I found that on page 2 of the following: http://www.iid.state.ia.us/about_us/FinancialReg/ExamRpts/2003/1249-03F.pdf The current website for the company is www.emcins.com If you are (as I was) inquiring about stock that was held through Empire Insurance Company, it has been escheated in California (where lost money goes). Go to www.sco.ca.gov (the state controller's website) and click on the link for search for unclaimed money. Hope that helps!