Memorial services for 90 year old Margaret Jeanne Wallace of Kalona will be held at 7:00 Friday at the Yoder-Powell Funeral Home in Kalona.  The family will greet friends from 6:00 until service time.  Burial will be at 10:00 Saturday in the Elm Grove Cemetery.  A memorial fund has been established for Essence of Life Hospice and ALS.  The Yoder-Powell Funeral Home is handling the arrangements.