Bruce, John Collingwood. *Cabe24.1261,2 Incised markings on stone found in the County of Northumberland, Argyleshire, and other places, from drawings made in 1863 and 1864, by direction of the late Algernon, Duke of Northumberland. Londone Printed for private circulation. Kell Brose, printers. 2ve 1869. Plates. Le f°.