Does anyone know a good resource for Omei Crane? Vids? Books?

Many sources (including KFM Online articles) cite Emei Shan as a center for crane studies, and my three brown belt crane forms in Shaolin Do supposedly come from the Omei crane......but I can't find any other tangible sources for Emei crane outside of our information. All those outside sources don't point to anything tangible. I can't seem to find much about Emei Crane at all....

So, for all you kungfu scholars, please point the way.