This accession consists of posters of exhibitions and events including: "Open House at the Smithsonian . . . On Occasion of its 125th Anniversary"; "Man and Beast: A Symposium on Comparative Social Behavior"; The Copernican Century 1450-1550, An Exhibit of Renaissance Science Technology and Culture at the Museum of History and Technology; "The Call of Science, Remembering Nicholaus Copernicus on his 500th Anniversary," Education Day at the National Museum of Natural History; and Copernicus, 1473-1973.