From The Age on this day in 1936:
Pictures on Glass.
One of the many hundreds of novel features of the great new liner Queen Mary will be the glass pictures forming the panels which will decorate the walls of the vessel's ballroom. They are now being prepared by a well-known London artist, who has been commissioned for the work. Using cutting wheels, sand-blasting apparatus and etching acids, he first forms the outlines of the various scenes upon the glass, and then applies delicate colors and tints to form the finished pictures. In some instances the colors are burnt on in a kiln. The whole work will take eight months.