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It is believed to be videotape that was filmed by Rene Dahinden, he's the guy behind the camera in that video. The men in that photo are: from L-R Don Abbot from the Vancouver Museum, Dale Moffit, the tracking dog handler; "Lady" the tracking dog; John Green and Bob Titmus. I don't know who the guy is on the right. That area (I believe) is part of the sandbar of Bluff Creek; the well-known if not familiar log is in the background...the one that is seen w/backhoe tracks in the Patterson film. Notice John Green has a long-lens camera shouldered on his left shoulder throughout this footage yet that I have seen, the only photos he ever released were up on Blue Creek Mountain Road of the footprints, (maybe Titmus walking on that road) nothing else, you can see those in Murphy's book)....the logging road you can see in the background. "If" that is NOT Blue Crk Mtn road, then it is the old logging road that used to flank Bluff Creek drainage back in the day; I'll have to go back and look again. That logging road no longer exists...it is the same road that Gimlin is seen riding with the packhorse and the wooden boxes...see pg 42 Murphy's book. John Green flew in by chartered plane, -the dog handler, the guy from the Vancouver museum, himself, the dog, Dahinden and another man in a white t-shirt (on the far far right) that I haven't been able to identify. The backhoe that was used belonged to Charlie Whitson but I don't believe that is him in the movie because Al Hodgson said in the October 2008 interview that he was furious with Patterson for using the backhoe without permission....one assumes that Patterson must have eaten up the gas or something (which had to be trucked in there in those days) If I read the video that JcR uploaded the link too above correctly, the suggestion is that there were dog tracks on the sandbar in the Patterson film as well as these in the Dahinden footage ....implicating a lot of names?? In that footage, there are splices; we don't ever see who is behind the camera...my thoughts are it was probably Dahinden. Another thing Al Hodgson talked about in that October 2008 interview was that Roger cast a quote child's track unquote...a small 9" track that can be seen in Patterson's track-collection-photograph.... fwiw....
Thanks really appreciated ... This area has kept Green and Titmus busy from time to time with Bigfoot tracks.
Though I did realize that John Green, tracking dog with trainer, along with other researchers, had gone up into the Blue Ridge area after the Patterson event, it was something else I was questioning... The footage of the dog at Bluff Creek that I have never seen before, and the implication and assertions that these videos portray kinda threw me off a bit.
I wasn't positive of "who was who" in the Photos, so thanks for that help.
I hear they were clearing trees for a road up in the ridge area, so I thinking this was the road. I wish I had some more quality pictures of the events, when they went back up with the tracking dog.
Is this the Patterson's track-collection-photograph you are referring to?

It was the videos with the tracking dog at the Bluff Creek site that I haven't seen before.
This material was actually what I was questioning more. I didn't realize they
had any footage of the tracking dog at the PGF site. I can only imagine that Dahinden took a few quality photos of this event.