Hi all - glad to find this old thread still gets added to!
Jim, going back to what you said about Hamish Imlach: I accept that he wasn't an Eskimo but he evidently was a demonstrator. I thought the guy with the cloth cap in the bottom left of the cover photo looked a lot like him. The pictures with the Black / Wagman article confirm it. In the top one he is talking to Nigel Denver, in the bottom one he is standing next to Josh MacRae on the right, facing the camera, though somewhat obscured by somebody else - but surely it is Hamish.
Keep well, all of you!