A three-way pro bono partnership between a corporation, a law firm and a legal aid group proves that combining a variety of legal skills can lead to success.

About five years ago, lawyers from St. Paul, Minn.-based 3M Co. partnered with the law firm Robins, Kaplan, Miller & Ciresi, and Southern Minnesota Regional Legal Services (SMRLS), a local legal aid provider, to help immigrants who struggled to complete their naturalization applications.