Mission San Xavier del Bac, also called White Dove of the Desert, is a National Historic Landmark. San Xavier Mission was founded as a Catholic mission in It is the oldest intact European structure in Arizona.
As stated on their website: Caboose No. SSW2 originally built by the International Car Company for the St. Louis-Southwestern Railroad (the Cotton Belt) which was a subsidiary of the Southern Pacific Railroad. It is known as an extended vision caboose due to the enlarged and overhanging cupola which gave the conductor a better view of the train ahead of him. — at DeQuincy Railroad Museum.