Yup, Northern Lights was 1972. See my previous post. I still can't separate the sight of the Aurora from the sound of Donald Lindsay playing his bagpipes while the lightshow was going on above. And yes, I believe Bob's spirit and the northern lights were definitely connected. It was also very, very cold in '72. I had a summer-weight sleeping bag and it got well below freezing one night. Brrrrrrr!