I worked for the MKT RR back in the 70's & the 80's. I had to take my buyout in 88 so moved back to MO. I'm now 74 yrs young and due to a brain tumor, I had to have removed from my optic nerve, I don't do well with any puzzle over 120 pieces. And have to enlarge them at that. Thank goodness they can be reduced in numbers on this website cause there are some great railroad puzzles out there. Of course, the old F units are my favorite. Hope you enjoy what I've posted.