Bigboy #4006 on display at the Museum Of Transportation in Saint Louis, Missouri. She is sitting outside, and is showing the wear and tear from the elements.

Update—The photo above was taken during the early 1990s. I haven't been back to the museum since that time. Railfan ‘Bobv’ tells me that the Bigboy was was painted sometime in the first decade of the 2000s, and she was looking pretty good during the fall of 2011. It is nice to see that this railroading icon is being well cared for.