26.7 linear feet. Originally begun by Seymour Rosen, these vertical files consist of materials such as newspaper clippings, articles, correspondence, pamphlets, maps, and other ephemera on art environments worldwide. These files also includes fifty U.S. state files that detail information on the political organizations of each state, so as to facilitate the nomination of sites to historical landmark status, or to cut through the bureaucratic red tape when trying to save those that are imperiled.