Korean History Online 한국역사정보 통합시스템This reputable portal site provides a one-stop search engine for numerous historical databases built and shared by nearly twenty organizations including the National Institute of Korean History, Academy of Korean Studies, Kyujanggak Institute of Korean Studies, etc. There is a directory organizing materials according to the type: historic books and documents, periodicals, classical translations, research data, bibliographies and catalogs, biographies, maps, dictionaries, chronologies, multimedia, historical relics and sites, epigraphs, the chronicles of the Chosǒn dynasty, and old newspapers. The federated search engine provides bibliographic information fetched from various sources—one can easily get carried away while exploring different interfaces and catalogs.