I'd say by looking at the front & back of the new TT with the spiral binding is what will do the trick. Perhaps maybe a separate booklet containing all of the various train ID's could be put together showing both UP & BNSF ( western, northwest, southwest & midwest regions), another for the KCS, another for CP & CN, another for CSX and the NS in each of their operating regions.If such a booklet was put together for those different regions, one could buy what interested them. To cram it all into one TT seems to be too big of a task. But I prefer spiral bond booklets myself.