I'm looking at this set, are the actual interview tapes used or is it a voice-over product of the book?...
http://www.amazon.com/gp/product/15...&pf_rd_t=101&pf_rd_p=320448601&pf_rd_i=507846
http://www.amazon.com/gp/product/15...&pf_rd_t=101&pf_rd_p=320448601&pf_rd_i=507846