Originally Posted by JohnRR
Working with that if one rubber component is effected in the system then all rubber components are subject to suspect as well which is why any licensed shop would recommend replacement (future legal liability) steel lines would not be effected.
I agree with John, IF power steering fluid was mixed into the brake system, replacing all the flexible lines at each wheel would be a good precaution. If original, they could probably stand to be replaced anyway. Removing and rebuilding each caliper and rebuilding or replacing the master cylinder would also give peace of mind. When bleeding the rebuilt system you'll use fresh brake fluid and flush out any contaminated fluid. When things are apart, check and lube the brake pedal levers too.