TIP: When researching an artist, make sure you know the proper form her/his name. There may be variant forms of the artist's name in different sources (especially if you are looking in English-language sources and the name is transliterated from a language with a different alphabet). Also, be aware of nicknames! The Getty's Union List of Artist Names (see below) is a good place to start if you're not sure what name you should use in your search.
Biographical dictionaries and encyclopedias provide biographical data (such as birth and death dates and lists of works), bibliographies and essays that are authored by experts in the field.