Oops! Lab for color prints from 6x17, 6x15, or 6x12 cm negatives?

I just noticed that I mis-titled my previous thread, and I apologize for wasting people's time. What I was (and am) after is recommendations for labs which can print from color negatives on 120 film, 6x17, 6x15 or 6x12 cm. I prefer to shoot negatives but given that most of the color places I'm familiar with now scan and print via inkjet, and I'm unwilling to pay a scan fee to get a contact proof print, I suppose I could shoot transparencies if I have to...

Thanks!

Mike