Clearwater River Company would be a great site to add to your list.
www.clearwatertrips.com Jim Cook and his staff offer enviromently friendly river trips, on the Clearwater River in north central Idaho.
The mission at Clearwater River Company is to provide you with a safe, comfortable, educational and unforgettable river and camp experience. All the while being sensitive to the cultural and environmental needs of the river, the surrounding area and all their inhabitants. Relaxation, with a mix of history, adventure and excitement. Plus you get to sleep in a teepee!