Collection Descriptive Notes:
For Units 1-5, 7-11, and 13-17 the speakers do a paused reading of the Basic Sentences, Supplementary Drills and the Listening In; for Lessons 19-23 they read only the Basic Sentences and the Listening In.
Collection Technical Notes:
Masters are the studio recordings done at the LLA in 1966-67; John E. Wahl (and Donald H. Ledin?), rec. eng. JEW (and DHL?), ed., 1966-67. The Kahane-Ward text is referenced separately.