There are many ways to obtain information on a law firm and it's reputation. The first thing I would recommend is speaking to lawyers in the firm itself to inquire about their experience, areas of expertise, and how long they have been in business. Next you should contact the Minnesota State Bar Association so that you could verify the information that was provided to you, the phone number being 18008826722. Also, contact the Minnesota Office of Professional Responsiblity to make sure that there have not been any complaints or grievances filed against the law firm. The number for that office is 18006573601.