Clayton Library has over 2500 genealogy and local history periodical titles. The periodical collection covers most US states and many foreign countries.
Many of these periodicals are indexed in the Periodical Source Index (PERSI), which is available at Clayton in book and cd-rom formats and through Houston Public Libraries subscription to the Heritage Quest database. PERSI is also available in many other libraries.
To determine Clayton's holdings of a particular periodical please search Clayton's Periodical Holdings Database.