Locations Menasha 1313 Midway Rd.Menasha, WI 54952-1129 920-733-8637ElectronicFilingCenter@yahoo.com Oshkosh 5111 Green Valley Rd. Oshkosh, WI 54904-9794 920-966-1088 EfcOsh@gmail.com Green Bay 1600 Shawano Ave. Green Bay, WI 54303-3246 920-405-0663 efcgb@att.net