Early in our search there were several. Some disappeared before we could capture or send to others. As we searched they became fewer and then only in off shore publications. Personally found three: Two in African article and one in Indonesia.
At one time there was a CSpan video/Alan Keyes. Then it too was edited out. The Way-Back machine SHOULD have a plenty of such articles.
I have read that Alan Keyes' Chief of Staff has denied that any such video exists. I would keep claims of the existence of this video in the "maybe" category.