I think the World Voyageur was spec'd with DiaCompe brakes and I've seen them with Weinmann 610/999s:
http://www.geocities.com/
http://www.geocities.com/
The Volare had Dura Ace side-pulls:
http://www.geocities.com/
Excuse the incompleteness of this site -- I have a mountain of scanning to do and no time ...
Bob Hufford
Springfield, MO