UP color scheme N&W passenger car

[N and W Modeling List]

I recently remeber seeing a picture of a N&W passenger car in the UP scheme.  It was a lightweight car.  I suspect it as after the 64 mergers and acquisitions of NKP and Wabash.  What was the routing of this car and where did it meet with the UP and what was the UP train?

Thanks
A.J. Gemperline