Bison Video

[debbiec58492344]

I have been trying to find a video illustration of how to use double exposures and cannot locate it. It was a Bison combined with the background and the end result looked like the hills and snow on the Bison. The current quick video of this is not the one I want. This was more detailed , larger screen, and moved slower.  It was also on the opening screen for Photoshop. Anyone have any idea if this is still available? Thank you. debbie