Italians, help the Red Cross – Italian poster

American aid — Italian poster

"HELP" World War I poster of Australian Red Cross Nurse (cropped)

Everyone do your duty! – Italian World War One poster

Vote, or he'll be your master – Italian poster

Red Cross poster, United States, World War I (POSTERS 43)

Blood donors are needed urgently to save lives – British World War Two poster

Red Cross poster, United States, World War I (POSTERS 52)

Red army against typhoid louse Soviet poster 1921

The German viper – Italian poster

Red cross poster, United States, World War I (POSTERS 64)

Long live communism! — Italian poster

Poster, In the Name of Mercy Give! Red Cross, 1917 (CH 18505065)