I worked for Cycle Sport in the early seventy's and sold the Rolls bikes. They had a full line of bikes made by a couple of different builders. Rosario passed away a few years ago and knew both E. Colnago and T. Campagnolo.
Cyclesport is still in Park Ridge and may be able to tell you more about the bikes as Mike Grotz runs the place, his father was the man who with Rosario imported the machines.