Marriage Record Sought

Looking for a marriage record for Vincent Prosser and Amelia(Emilie) Schimek who were married in St. Peter and Paul’s Catholic Church in Mankato, Minnesota. Both were widowed. We found a newspaper article dated Oct , 7, 1913 from the Mankato Free Press stating that they were married “this morning” by Rev. Father Hartman. Any one have any ideas of how to proceed with finding the marriage record?