There is a tour that I'm looking forward to taking when we're there in a couple weeks. I'll be sure to report back about it when I get home.
From Allears: "Wonders of the Lodge" tour is offered at 9 am on Wednesdays, Thursdays, Fridays and Saturdays. This tour is about the architecture and how the Lodge was built, takes you outside, talks about landscaping, and then goes back inside and talks about the artwork like the metal work and the Totem Poles and the paintings.