Loyalhanna Creek (Westmoreland Co.) COORDINATES: 40.268969, -79.296347 believed to be original location COUNTY: Westmoreland MANUFACTURER: Unknown. No maker of stream markers has been determined. STATUS: Unknown if this marker still stands. Known only from that old postcard view. View from historic post card donated by JGl U.S. Route 30 (Lincoln Highway) west of Ligonier Appears to be typical double-sided stream marker on top mount post