The term 'Riveter on WWII Posters' refers to the iconic image of Rosie the Riveter, a cultural icon of World War II. The image was used to represent the women who worked in factories and shipyards during the war, manufacturing munitions and war supplies. Rosie the Riveter became a symbol of female empowerment and patriotism, and her image was featured on posters, advertisements, and other media.