Memorial Mass for 83 year old Gordon Gillam of Sigourney will be held at 10:30 Saturday at St. Mary Catholic Church in Sigourney.  Burial will be at a later date.  Visitation will be from 4:00 to 7:00 Friday at the Powell Funeral Home in Sigourney where there will be a wake service at 5:00.  A memorial fund has been established for the National Rifle Association.  The Powell Funeral Home and Cremation Service in Sigourney is handling the arrangements.