The Nuttall Encyclopedia
A range of mountains rich in precious as well as useful metals, extending from the Arctic Sea to the Sea of Aral, and separating European from Asiatic Russia, and is 1330 m. in length, 60 m. in breadth, and 3000 ft. in average height.
Wood, James, ed. Entry for 'Urals, the'. The Nuttall Encyclopedia. https://www.studylight.org/encyclopedias/eng/nut/u/urals-the.html. Frederick Warne & Co Ltd. London. 1900.