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References

  • Billings, W.D. 1969. Vegetational pattern near alpine timberline as affected by fire-snowdrift interactions. Vegetatio 19: 192207.
  • Gruell, G. E. 1980. Fire's influence on wildlife habitat on the Bridger-Teton National Forest, Wyoming. Vol. I. Photographic record and analysis. Research Paper INT-235, U. S. Department of Agriculture, Forest Service, Ogden, UT.
  • Gruell, G. E. 1983. Fire and vegetative trends in the Northern Rockies: Interpretations from 1871–1982 photographs. General Technical Report INT-158, U. S. Department of Agriculture, Forest Service, Ogden, UT.
  • Houston, D. B. 1982. The northern Yellowstone elk: ecology and management. Macmillan Publishing Co., New York.
  • Johnson, K. L. 1987. Rangeland through time: a photographic study of vegetation change in Wyoming 1870–1986. Miscellaneous Publ. 50, Agricultural Experiment Station, University of Wyoming. Laramie, WY.
  • Phillips, W. S. 1963. Photographic documentation: vegetational changes in northern Great Plains. Report 214, Agricultural Experiment Station, University of Arizona, Tucson, AZ.
  • Progulske, D. R. 1974. Yellow ore, yellow hair, yellow pine: a photographic study of a century of forest ecology. Bull. 616, Agricultural Experiment Station, South Dakota State University. Brookings, SD.
  • Stahelin, R. 1943. Factors influencing the natural restocking of high altitude burns by coniferous trees in the Central Rocky Mountains. Ecology 24: 1930.