Yes the sow had a collar, I don't think the cubs (if you can call them that) did.
The shots with the bears was on Many Glaciers Road.
The story that we heard was that a Mountain Goat fell, and the grizzlies were eating good for a couple of days.
The black bear and her cubs happened upon the scene, but when they saw the grizzlies, made a hasty retreat.
If you look closely at the second shot, you can see the collar on the far left grizzly.
Thanks for looking guys.