3094720 Richardson\'s original musical stones in Keswick Museum (b/w photo) by English Photographer, (20th century); Private Collection; (add.info.: Richardson\'s original musical stones in Keswick Museum. A lithophone made from hornfels, a stone found on Skiddaw in the Lake District, by local stonemason and self-taught musician Joseph Richardson in 1840. Postcard, early 20th century.); 穢 Look and Learn; English, out of copyright.