This is a Roberson's birch palette and brush and was given as a gift to Charles Goldman ... Charles Goldman was also the owner of Burne-Jones' monumental The Sleep of Arthur in Avalon, which is an epic romantic scene depicting the last episode from the legend of Le Morte d'Arthur (written by Sir Thomas Malory in the Middle Ages and was a huge influence on Pre-Raphaleite art). Some years after Goldman's purchase of the work, his son Charles bought a number of preparatory studies for it, but most were sold by his grandsons at auction in 1963 along with further works by Dante Gabriel Rossetti. Bonhams 2006