. "Databases" . . . "American memory" . . . . . "History" . . . . . . "Reproductions of textual materials, photographs, and motion pictures in the collections of the Library of Congress. Includes a finding aid or catalog-database, accompanying background information, and other introductory materials." . . . . . . . . . . . . . . "Pan-American Exposition (1901 : Buffalo, N.Y.)" . . . "United States" . . "San Francisco (Calif.)" . . "New York (N.Y.)" . . "1861 - 1921" . .