business and corporation records
State Corporation and Partnership Records Online
Secretary of State offices or corporations departments in many states have websites where you can search by the name of a corporation or partnership to see if it has filed in a particular state.
The online records for each company usually list the address and top officers or partners, and sometimes the board of directors in the case of corporations.
You'll need to go to the website for a particular state and then locate the Web page for the Secretary of State or Department of Corporations office in that state.
The National Association of Secretaries of State has a website that lists the home pages of secretary of state offices around the country: