OLAC Language Resource CatalogThe Open Language Archives Community (OLAC) is an international partnership of about 60 different member institutions, each of which holds language data or information in some form. Through the University of Pennsylvania Libraries, OLAC operates a union catalog providing access to resources from all of these institutions. The available data include textual materials, audio, video, pedagogical works like dictionaries, and software. It is possible to filter results by archive, language, discourse type, and format. Notably, results can also be filtered according to whether the material is available online.