Bulletins are read by 3,500,000 workmen each week ... Attention! ... Motormen attention! To the important duty of operating your car with safety ... (February, 1918). National Safety Council. [Poster.]
National Safety Council Electric Railway Section Chicago
1 poster monochrome 28 x 21.5 cm
Two images: a American soldier standing at attention, and a motorman concentrating on driving while a passenger tries to talk to him.