Here is what you are looking for:
http://elknut.com/You will NOT be buying a hunting video with a little instruction thrown it like most of them out there, but simply a very successful elk hunter describing what the elk are saying and what to say back to them.
Your best deal is to buy the Bugling bulls and beyond 1,2,4. package
You can buy just the first one, but I promise you will end up buying more.
You will thank me. Not a personal friend of his, never met him, but his videos taught me more than all other instructional videos combined.
Elknut posts frequently on bowsite.com because he only bowhunts. Lots of testimonials of his videos there as well.