- Growth intercept as an indicator of site index in natural stands of white pine in the southern Appalachians (USDA Forest Service research note SE) by Donald E Beck,  1971
 - Height growth and site index curves for red alder (Research paper PNW) by Constance A Harrington,  1986
 - Site index curves for northern hardwoods in northern Wisconsin and upper Michigan (USDA Forest Service research paper NC) by Willard Handy Carmean,  1978
 - Site indexes for Engelmann spruce in the central Rocky Mountains (U.S. Forest Service research paper RM) by Robert R Alexander,  1967
 - White pine site index for the southern forest survey (Research paper SRS) by Bernard R Parresol,  1998
 - Height growth and site index curves for managed, even-aged stands of ponderosa pine in the Pacific Northwest (USDA Forest Service research paper PNW) by James W Barrett,  1978
 - Dominant height growth models and site index curves for site-prepared slash pine plantations in the lower Coastal Plain of Georgia and North Florida (Research ... Plantation Management Research Co-operative) by James D Newberry,  1978
 - Site index of New Jersey sweetgum stands related to soil and water-table characteristics (U.S. Forest Service research paper NE) by John J Phillips,  1963
 - Polymorphic site index curves for white pine in the southern Appalachians (USDA Forest Service research paper SE) by Donald E Beck,  1971
 - Predicting site index and height for selected tree species of northern Idaho (Research paper INT) by Brian M Steele,  1986
 - Relations between western white pine site index and tree height of several associated species (U.S. Forest Service research paper INT) by G. H Deitschman,  1965
 - Polymorphic site index curves for red fir in California and Southern Oregon (SuDoc A 13.78:PSW-206) by K. Leroy Dolph,  1991
 - Estimates of site index and height growth for Douglas-fir in high-elevation forests of the Oregon-Washington Cascade Range : curves and tables for field application (SuDoc A 13.78:PNW-RP-378) by Donald J. DeMars,  1987
 - Site index and height growth curves for managed, even-aged stands of Douglas-fir east of the Cascades in Oregon and Washington (Research paper PNW) by P. H Cochran,  1979
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