- Predicting site index for Virginia, loblolly, and shortleaf pine in the Virginia Piedmont (U.S. Forest Service research paper SE) by Paul P Kormanik, 1966
- A method for constructing site index curves from measurements of tree age and height: Its application to inland Douglas-fir (U.S. Forest Service research paper INT) by James E Brickell, 1968
- Site-index curves for even-aged northern hardwoods in the Green Mountains of Vermont (Bulletin / Vermont Agricultural Experiment Station) by Robert O Curtis, 1962
- Revised site index curves for balsam fir and white spruce in the Lake States (Research note NC) by Willard H Carmean, 1981
- Wisconsin woodlands: Estimating and interpreting site index by Michael Huebschmann, 1986
- Polymorphic site index curves for spruce and balsam fir growing in even-aged stands in northern Maine (Bulletin / Life Sciences and Agriculture Experiment Station, University of Maine at Orono) by Ralph H Griffin, 1980
- How to estimate red pine site index by David H Alban, 1979
- Estimating northern red oak site-index class from total height and diameter of dominant and codominant trees in central Appalachian hardwood stands (NE-RP) by Neil I Lamson, 1987
- A method for constructing site index curves from height-age measurements applied to Douglas-fir in the Southwest (SuDoc A 13.79:RM-510) by Carleton B. Edminster, 1991
- Site index for loblolly pine in the Atlantic Coastal Plain of the Carolinas and Virginia (USDA Forest Service research paper SE) by Kenneth B Trousdell, 1974
- Oak site index and biomass yield in upland oak and cove hardwood timber types in West Virginia (USDA Forest Service research note NE) by Harry V Wiant, 1980
- Site index curves for young-growth incense-cedar of the westside Sierra Nevada (Research note PSW) by K. Leroy Dolph, 1983
- Height-age and site index curves for Pacific silver fir in the Pacific Northwest (SuDoc A 13.78:PNW-RP-418) by Gerald E. Hoyer, 1989
- Height growth and site index curves for western white pine in the Cascade Range of Washington and Oregon (SuDoc A 13.78:PNW-RP-423) by Robert O. Curtis, 1990
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