These old videos are a treat. You can see how things have changed over the years, and how some things have not changed. This video was made in 1939. The amazing beauty of the Tetons has not changed, the way we approach wildlife has. For example, in the video, there are two kids petting a calf. Today we know that this could cause the mother to reject the calves. It still has great information regardless of the age of the film.