The Twin Cities, home of the Mall of America, might now also be Law Firm Mergertown, USA.

Gray Plant Mooty, Minneapolis' oldest continuing law practice, announced this week its acquisition of Hughes Mathew Greer, a three-lawyer firm based in nearby St. Cloud, Minnesota. The union is the latest legal services combination in the land of a thousand lakes, coming a week after Ballard Spahr agreed to absorb Minneapolis-based Lindquist & Vennum, the second merger in two weeks for the Philadelphia-based Am Law 100 firm.

The impetus for the tie-up between Hughes Mathew Greer and Gray Plant Mooty was the desire by the acquirer to strengthen its health care practice in and around Minneapolis, said Charles Maier, co-managing partner of 185-lawyer Gray Plant Mooty. Maier, who also co-chairs his firm's litigation group, became head of Gray Plant Mooty in April 2015 alongside Sarah Duniway, co-chair of its nonprofit and tax-exempt organizations practice.