A ray of sunlight and some sleuthing has helped a librarian identify a World War I soldier whose photo was handed in to the State Library of Victoria. The chance sighting of handwriting on the back of the photo led to the discovery that he was Melburnian Harold Ross Clark who was killed in Belgium in 1917. Dinah Stehr (left) with librarian Ann Copeland and the photo of Stehr’s WWI soldier grandfather, Harold Ross Clark. Simon Schluter By further detective work, librarian Ann Copeland tracked down one of Clark’s descendants. Copeland gave the framed portrait to Clark’s granddaughter Dinah Stehr, of Newcastle, in New South Wales, who visited the library last week. Stehr said she had never seen the portrait, which was handed in by an unknown person to a security guard at the library last month with an unsigned Post-it note attached. The Post-it note attached to the photo that was handed in.…