The Nuttall Encyclopedia
Urim and Thummim
Two ornaments attached to the breastplate of the Jewish high-priest which, when consulted by him, at times gave mysteriously oracular responses.
Wood, James, ed. Entry for 'Urim and Thummim'. The Nuttall Encyclopedia. https://www.studylight.org/encyclopedias/eng/nut/u/urim-and-thummim.html. Frederick Warne & Co Ltd. London. 1900.