The court's website will generally provide biographical and contact information about judges.
Additional biographical information is available from:
Other judicial directories of interest
"Profilers" - considerable information about a law firm's litigation activity, a litigator's practice, and a judge's rulings may be obtained from the litigation analytics tools provided by each of the major commercial research services. Of the three analytics tools, Westlaw Profiler generally has the best information about individual lawyers connects lawyer profiles with litigation analytics.
Directory of Corporate Counsel (Westlaw)