Biographical material can be found in many places. Start with a search in the Quicksearch box on the library's homepage. Use the name of the individual (Calvin Coolidge) or a subject relating to the class of person (United States Presidents) and biography.
Biography can be some of the primary content of certain databases. Those are listed in the center box.
Biography Reference Bank provides biographical information on approximately half a million people, from antiquity to the present, along with thousands of images.
This is a free web source that leads to where reprints of criticism can be found in the Gale series hardcopy reference volumes. Gale excerpts key passages of general criticism from books and articles. A well known title covered by the index is Dictionary of Literary Biography.