Raphael Kirchner produced over a thousand published paintings and drawings in his lifetime, mostly in the form of picture postcards. His orientalist "Geisha" series was among his most popular, with over 40,000 cards sold. The series is a notable example of the cross-influence between Art Nouveau in the West and Japanese art of the Meiji and Taishō periods. Kirchner's often mildly erotic paintings of feminine beauty, in convenient postcard and magazine page form, were among the early pin-ups favored by European and American soldiers in World War I, and Kirchner's lasting influence on the pin-up genre was still recognized in the World War II pin-up heyday period. Kirchner also produced a small number of sculptures, some of which were photographed for postcards as well. In New York, he also produced costume designs for musical theatre productions.