The KZSU Collection consists of tape recordings of lectures by Stanford faculty on campus from January to May 1968, originally broadcast on student radio station KZSU. While on a variety of topics, contemporary sociological, scientific, and economic issues are prevalent. The lecture series was sponsored by Century 21 realty company. Note cards describing tape speed, playback issues, and sound quality are inserted in each tape box. Some of the multi-part lectures are missing a part. Additional recordings may be added to this collection at a later time.