I realized after I replied to your query that you may not be familiar with these books at all, so I should give a fuller answer. These 3 volumes are made up of the teachings that Trungpa Rinpoche gave at the 3 month seminaries he led from 1973 to 1986. The monumental task of editing these teachings into a set of cohesive books was led by Judy Lief, and the results are amazing—they convey the entire Tibetan Buddhist path as taught by Chogyam Trungpa Rinpoche.