Roberto Valturio, an Italian engineer, included an illustration of a dragon war machine in his "De re militari," ("On military matters"), an influential military manual in the 15th Century.
A never-seen-before collection of letters from Georgia O'Keeffe and Alfred Stieglitz offers new insight into the couple's art, marriage and ambitions during an eighteen-year span in which they were primary shapers of American Modernism. The letters were sent, independently of one another, to their mutual friend, filmmaker Henwar Rodakiewicz, with whom O'Keeffe seemed especially close. The Library acquired them from a private collection. This is the first time they have been available to the public.