Märklin Zthek Pennzee
Micro-Trains Line Hay Bros. Garage Railroad & Co.
Freudenreich Feinwerktechnik Micro Structures IBL
Krüger Bachmann westmodel Micron Art

These are firms I've had contact with. There's a more comprehensive page of manufacturers at Do it Yourself in Z-scale

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Sun, Apr 3, 2005