1. Fire history of the Lamar River drainage, Yellowstone National Park;Barrett,1990
2. Wildfires in nothern Yellowstone National Park;Houston;Ecology,1973
3. Climate-induced changes in forest disturbance and vegetation;Overpeck;Nature,1990
4. Meteorological drought;Palmer;US Weather Bureau Research Paper 45,1965
5. United States historical climatology network (HCN) serial temperature and precipitation data;Quinlan,1987