traditionally, matte paintings were made by artists using paints or pastels on large sheets of glass for integrating with the live-action footage. the first known matte painting shot was made in 1907 by norman dawn (asc), who improvised the crumbling california missions by painting them on glass for the movie "missions of california". notable traditional matte-painting shots include dorothy's approach to the emerald city in "the wizard of oz", charles foster kane's xanadu in "citizen kane", and the seemingly bottomless tractor-beam set of "". the first "star wars" documentary ever made ("the making of star wars", directed by robert guenette in 1977 for television) mentioned the technique used for the tractor beam scene as being a glass painting.