Complex sentence: He became a member of the American board of the "Hibbert Journal", and made contributions to that and other philosophical journals.New International Encyclopedia together with his Columbia colleague John Dewey, Keyser helped found the American Association of University Professors (AAUP).
Split into simpler sentences: He became a member of the American board of the "Hibbert Journal", and made contributions to that and other philosophical journals. Together with the New International Encyclopedia and his Columbia colleague John Dewey, Keyser helped found the American Association of University Professors (AAUP).