Cool trip! Mary and I have planned -- and scrubbed -- several trips to
Yellowstone, due to work schedules and other factors just not coming
together.
We've been through Yellowstone by motorcycle, car, and on foot (in a
very limited way) -- but not yet by air. It's on our "must-do" list,
however.

Ever think about putting a RAP'er trip to Yellowstone together?
Pre/post-OSH?