Pat the book you have is it Trailing a Bear by Robert Munger 1995 ed. That is the book I have before me. The top picture title is "Fred shooting a Polar Bear" which just shows the bow right hand tilt. The bottom picture which I have just re-read shows a picture of Fred at Full draw "Taking a shot at a Polar Bear ice sculpture". This I have just noticed is an ice sculrture not a bear.
In the book Munser mentions that one of the camera men left camp every day for an hour or so and Fred and him where courious as to where he was going so they followed him or his tracts and found that he had been carving a polar bear out of ice. Turns out the guy was an art student also and from the looks of the picture a good one as I thought this was a real picture of him shooting at the bear.