- Estimating Dunning's site index from plant indicators (USDA Forest Service research note PNW) by Colin D MacLean, 1973
- Base-age invariant polymorphic site index curves for even-aged spruce-fir stands in Maine (Experiment station bulletin / Maine Agricultural Experiment Station) by Bret P Vicary, 1984
- Site index curves for young-growth California white fir on the western slope of the Sierra Nevada (SuDoc A 13.78:PSW-185) by K. Leroy Dolph, 1987
- Evaluation of two eastern white pine site index equations at Biltmore Estate, North Carolina (SuDoc A 13.78:SRS-21) by W. Henry McNab, 2000
- Site index: A measure of forest land quality (FSA) by R. Larry Willett, 1994
- Oak site index on Belmont limestone soils in the Allegheny Mountains of West Virginia (U.S. Forest Service research paper NE) by Harry W Yawney, 1964
- Site index: Accuracy of prediction (USDA Forest Service research paper SE) by Donald E Beck, 1973
- Site index curves for forest tree species in the eastern United States (General technical report NC) by Willard Handy Carmean, 1989
- Estimating red pine site index in nothern Minnesota (USDA Forest Service research paper NC) by David H Alban, 1976
- Height growth and site index curves for Douglas-fir on dry sites in the Willamette National Forest (Research paper PNW) by Joseph E Means, 1985
- A site index table for aspen in the southern and central Rocky Mountains (Research note RM) by John R Jones, 1966
- Site index of even-aged hemlock-spruce stands in southeast Alaska by Wilbur A Farr, 1981
- Site index, height growth, normal yields, and stocking levels for larch in Oregon and Washington (Research note PNW) by P. H Cochran, 1985
- Metric site index curves for aspen, birch, and conifer in the Lake States (USDA Forest Service general technical report NC) by Paul R Laidly, 1979
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