Classified as either conferences or summer institutes, these files document Sellars's attendance of professional gatherings. Under each of these headings, the files are arranged alphabetically by topic. The bulk of the files contain minimal information on the content of the conferences and simply document Sellars's travel accommodations and provide general information on the host institution. However, there are several highly informative files from conferences about the "Concept of Matter," "Mind and Brain," "Philosophy of Language," "Predication," and the "Summer Institute on the History and Philosophy of Science and Mathematics." These more extensive files tend to contain agendas, correspondence, copies of the presented papers, and Sellars's notes on the presentations.