Ohnstav Twichell Address: 746 Front St, Casselton, ND 58012 Phone: (701) 347-4652 Lawyers Other Businesses: Ohnstav Twichell at 746 Front St, Casselton, ND 58012 Ohnstav Twichell at 746 Front St, Casselton, ND 58012 Ohnstav Twichell at 746 Front St, Casselton, ND 58012 Nilles Law Firm at 606 1st St N, Casselton, ND 58012