I was on the Big Ten Network web-site and came across a link for feedback on their programming. I sent them a note thanking them for their coverage and asking for more, including broadcasts of "classic" Big Ten wrestling events. Here was the response:

"Thanks for the positive comments. We are very proud of our wrestling coverage this year and plan to expand coverage in future seasons.

In general, we have rights to air past Big Ten wrestling matches that took place at Big Ten venues. We are working with the Big Ten conference to build our library of airable classic sports. If you have any specific matches or wrestlers that you would like to see, please let us know and we will do our best to find them for you.

Thanks for watching BTN!

--Big Ten Network"

I think that it would be great to flood them with requests. Here is a link:
http://www.bigtennetwork.com/contact/