Killer Lion (1966) by Steve Frazee
1. Treachery Trail (1968) by Harry Whittington
1. Winter Grass (1968) by Dean Owen
1. The Pioneer Spirit (1992) by Stephen Calder
2. Black Silver (1967) by William R Cox
2. Ponderosa Kill (1968) by Dean Owen
2. The Ponderosa Empire (1992) by Stephen Calder
3. The High-steel Hazard (1993) by Stephen Calder
4. Journey of the Horse (1993) by Stephen Calder
5. The Money Hole (1996) by Stephen Calder
6. The Trail to Timberline (1996) by Stephen Calder