They depict Christian symbols and also a woolsack and the White Rose of York. The Lords' Mace is placed on the rear part of the Woolsack. Lord Speaker thus elected then replaced the Lord Chancellor on the Woolsack. In front of the Woolsack is an even larger cushion known as the Judges' Woolsack. Crossbenchers, sit on the benches immediately opposite the Woolsack. The House's mace, which represents royal authority, is placed on the back of the Woolsack. The Tetbury Woolsack Races are held on the Whitsun Bank Holiday Monday. When presiding over debates, the Lord Speaker sits on the Woolsack. He also wrote a further autobiography, "From Coal Sack to Woolsack". In 1938, it was discovered that the Woolsack was, in fact, stuffed with horsehair. The Woolsack Honor Society was founded in 1920 for the purpose of recognizing academic excellence. After its purchase by the Gascogne Group, the Woolsack Castle is today privately owned.