I was looking on the web for urban buildings and came across an interesting site. They have a modest range of free-to-download self-print city buildings. They are scaled for 10mm miniatures (the equivalent of N gauge), but by simply doing a 33% resize they are fine for T. With a bit of cutting, pasting and fiddling the scale by a few percent, you can get quite a nice variety. Check out the first link on the page (Downloadable Buildings Info) for some impressive cityscapes.
http://www.hawkwargames.com/blogs/downl ... -buildings