The Western Ohio Chapter of the Lincoln Highway Association will hold its monthly meeting on Tuesday, Dec. 16 in Delphos.  Members and guests will dine at 6 p.m. at The Grind Café and Coffee House, 226 N. Main Street and a short business meeting will follow.  Near 7 p.m., attendees will proceed to 241 N. Main Street, where they will tour the Delphos Canal Commission and Museum's 16th Annual Christmas Tree Festival and display.  The public is invited.