These are 10-page promotional brochures or sample lessons. They are missing 95% of the course content. They exist to capture your email address for a newsletter.
If you truly want the spirit of the Linguaphone Advanced English Course, forget the PDF. Buy a modern advanced course (or use the FSI free materials), download the MP3s, and spend 45 minutes a day shadowing.
Hide the PDF. Listen to a segment and write what you hear. Then compare to the PDF. Advanced learners miss prepositions and articles—this fixes that.
Stop searching. Start learning.