Biographical dictionaries and encyclopedia are reference books that provide information on authors. Hardcover, paperback and digital versions available on Amazon.com contain information on authors working in fiction, nonfiction, arts and science.
"100 Most Popular Contemporary Mystery Authors" by Bernard Drew and "Southern Writers: A New Biographical Dictionary" by Amber Vogel and Joseph M. Flora are two such examples. The latter addresses authors with Southern association, either by subject matter, rearing or birth.
"The Biographical Dictionary of British Feminists" by Olive Banks contains brief accounts of British feminists of the 19th century movement, such as Anna Wheeler and Jessie Boucherett. Two biographical encyclopedias on writers working in philosophy and natural science include "The Biographical Encyclopedia of Islamic Philosophy" by Oliver Leaman and "Early American Nature Writers: A Biographical Encyclopedia" by Daniel Patterson.
Depending on the biographical dictionary or encyclopedia, details about the author's writing accompany a selected bibliography, criticism and suggested reading.