8The Library of Congress. Mission and History (American Memory form the Library of Congress) [EB/OL]. [2011- 04-15 ]. http://memory.loc.gov/ammem/about/index.html.
9The Library of Congress. American Memory form the Li- brary of Congress) [ EB/OL ]. [ 2011-04-15]. http ://mem ory.loc.gov/ammem/index.html.