MAS Ultra (EBSCO)This comprehensive database contains full text for nearly 500 popular magazines including America's Civil War, American Heritage, American History, Archaeology, Astronomy, Bioscience, Careers & Colleges, Civil War Times, Congressional Digest, Discover, History Today, Nation, National Review, New Republic, New Scientist, Popular Science, Science News, Scientific American, Smithsonian, World War II, etc. Full text is also available for 85,670 biographies and over 107,000 primary source documents. MAS Ultra also contains more than 360 reference books (including the Columbia Encyclopedia and the CIA World Fact Book); an Image Collection of over 592,000 photos, maps & flags, color PDFs; and expanded full-text backfiles (back to 1975) for key magazines.