UP 3985 in Dallas & Fort Worth

[cefinkjr]

No, UP 3985 isn't coming back to Dallas soon; at least, not as far as I know.  I'm looking for somebody with a better memory or records than I have.

I discovered some old 35mm slides I have of UP 3985 taken during its last visit to Dallas but, like most of my slides, they have no date or description.  I recently had them digitized along with some other old film and I'm trying to organize things.  Can anyone tell me the date of UP 3985's last visit to Dallas?

Thanks in advance for any information you can provide.