Allegan, MI, died Tuesday, March 7, 2006 at her home. Mrs. Koperski was born November 8, 1924 in Otsego, MI, the daughter of Sherman and Leona (Pease) Oisten. She was a member of the Blessed Sacrament Catholic Church for 50 years. She had been employed at the Perrigo Co. for 20 years, the last 10 years working at the original Perrigo Company Store. Surviving are 5 children, Sharon and Garry Vahue and Donald and Sarah Koperski, all of Allegan, Thomas and Connie Koperski of Richland, Mary Miller of Arizona and Mark Koperski of Allegan; 8 grandchildren; 2 great-grandchldren; 2 brothers, Herman and Delores Oisten of Florida and Robert Oisten of Holland; 2 sisters, Mary Stainbrook of South Haven and Shirley and Paul VanOrder of Bloomingdale; several nieces, nephews, and cousins. She was preceded in death by her husband, Don, in 1990. Friends may meet with the family at the Blessed Sacrament Catholic Church from 10 a.m. Friday until time of Mass of Christian Burial at 11 a.m. Rev. Fr. Jerome M. Heyman, O.S.A., Celebrant. Interment Blessed Sacrament Cemetery, Allegan. Contributions may be made to the Blessed Sacrament Catholic Church Scholarship Fund. Arrangements by the Gorden Funeral Residence, Allegan Chapel.