Biographical dictionaries normally contain brief biographies summarizing a person's life and accomplishments.
Almost any subject imaginable has a biographical dictionary associated with it. If they are physical volumes, they are often located in the subject area being described. Many of the library's physical items are in the Reference or Music Reference collections. There are also many biographical dictionaries available in our online collections.
Below are samples of both online and paper biographical dictionaries. These lists are NOT exhaustive, but intended to give a sense of the scope and specificity possible in biographical dictionaries.