A trove of postcards featuring images of nurses and the nursing profession will be on display at the Washington State University College of Nursing. "Pictures of Nursing: The Zwerdling Postcard Collection" is a traveling exhibit from the National Library of Medicine. It’s a selection of the nearly 2,600 postcards collected by former registered nurse Michael Zwerdling and acquired by the library, an institute within the National Institutes of Health. The postcards in the collection were produced from 1893 to 2011. They feature photos and artistic images of nursing, and show how the image of nurses in popular culture changed through the decades.