The Potomac-Patuxent chapter of TU will hold its annual fly tying exposition on Wednesday the 17th in Silver Spring. There will be 8 or 9 tiers as well as material and equipment sales. Sales include a Renzitti Traveler vise, tool kits, tying desk, spool rack and drying rack. The meeting is open to the public and all are invited. The meeting is at the Margaret Schweinhaut Senior Center, 1000 Forest Glen Road, Silver Spring, Maryland and starts at 7pm.