Archives of American Art (Smithsonian)"Our vast holdings are a vital resource to anyone interested in American culture over the past 200 years and consist of more than 20 million letters, diaries, scrapbooks, manuscripts, financial records, photographs, films, and audiovisual recordings of artists, dealers, collectors, critics, scholars, museums, galleries, associations, and other art world figures. The Archives also houses the largest collection of oral histories anywhere on the subject of art."