G.R.A.: Smokeless and Odorless Automobiles
Poster advertising an automobile accessories company, "GRA combustor DRP makes every car smoke-free and odorless." Hans Rudi Erdt (March 31, 1883 - May 24, 1918) was a German graphic designer, lithographer and commercial artist known for his contributions to the Sachplakat movement. He was one of the most important representatives of German poster art between 1906 and 1918.