…”If You Are An Electrician, Mechanic Or A Telegraph Operator You Belong In The US ARMY SIGNAL CORPS – If You Are Not We Will Train You. Get In Now”. Superbly rendered imagery probably done just before the first World War. A radio operator sits aside his Marconi while his buddy peers out with binoculars and another takes messages beside him. This is among the earliest radio posters ever and is exceptionally done and vividly lithographed. Overall about near mint. Small tear and small paper loss lower left. Quite bold colors.