Songwriters on the Edge of Texas events will be held at Northridge Country Club.  On Sunday, beginning at 5 p.m., the concert will feature Charlie Mars with special guests, Pony Bradshaw and Caroline Joyce.  Dinner will be catered by Outback Steakhouse.  On Monday, the Golf Tournament will be held with morning and afternoon flights.  Both events will benefit CASA (Court Appointed Special Advocates).  For tickets, call 903-792-1030.