CB&Q's Twin Zephyrs, a Chicago-Twin Cities train. Mostly all domes and a diner with a daylight run along the Mississippi, a recreation would be a great cruise train today. You'd have to use E8's instead of E7s, but still a good way to put those moldering domes back to work if BNSF were amenable.

http://abpr.railfan.net/abprphoto.cgi?o ... r_1957.jpg