Here's a snapshot of the round barn, built by Joseph S. Tunnicliff, 1910,  as it looks today [August 2008] .  A good north wind would take it out quite easily.  The house has been gone for several years.   The little girl is our granddaughter, Hallie Tunnicliff Johnson, 7, of Bismarck, North Dakota. [and the cat is??] If  you are interested, we have several other snapshots taken at the same time.
photo from Hunter/Tunnicliff Photo Album: Merrily Tunnicliff