I've volunteered to toss out a few beginner's challenges in the Google Earth contest, and since I've won the limit, I can't play anymore, (at least in the Beginners category), so here we go:
We have a winnah! Congrats to Matt13, who correctly guessed Denison, Texas (and the former MKT Ray Yard) . Besides being an important spot on the Katy, Denison is also known as the birthplace of Dwight D. Eisenhower, whose birth home is right next to the former right-of-way of the now-gone MKT Greenville Sub to Dallas.