Series has 36 lectures on 18 cassettes but one cassette on Part III, lectures 25 and 26 is missing. So there is a total of 17 cassettes on this offer. Parts I and III have an outline descriptive booklet. The booklet is missing for Part II. The booklets are not really needed as the lecturer presentations are comprehensive and clear - if you miss a point, you rewind and replay. It is likely that the missing 2 lectures can be gotten from the Teaching Company - they list their website and 800 number. The content is collegiate level or post grad but will be beneficial to both teachers of the discipline and the general public with an intellectual interest in English foundations. Media S+H $ 6.