The Gale Literature Resource Center provides basic information about an author or a playwright as well as literary criticism from journals. When you do a search on the author's name, the first tab of results will be a link to a biographical profile of his/her life and works, while the second tab will give links to literary criticism and other articles. Other tabs will lead to additional resources.
For statistics on a wide range of topics in all fields arranged A-Z (crime, demographics, children, labor, etc.) this Middlebury Libraries Statistics Guide has links to both national and international resources.