The U.S. Air Service needs machinists and metal workers See U.S. Army recruiting office at blank before December 13.

The U.S. Air Service needs machinists and metal workers See U.S. Army recruiting office at blank before December 13. Date Created/Published: 1917. WW1 propaganda poster provided by LOC. Original medium: 1 print (poster) : lithograph ; 35 x 51 cm.