Drake University’s Anderson Gallery will open its new season with “Ideas at War: American Propaganda Posters of World War II,” an exhibition featuring more than 50 original wartime posters from the collection of the State Historical Museum of Iowa. The exhibition, curated by John Fender, designer and associate professor of graphic design at Drake, will open on Friday, Sept. 11, with a reception from 5 to 7 p.m. at the Anderson Gallery in Drake’s Harmon Fine Arts Center. “Ideas at War” will remain on display through Oct. 23.