A Retrospective Look

(General Address to the ICQMM & 1999 SMC)

LEWIS R. GROSENBAUGH

Near the end of a researcher's career, it behooves him or her to retrace the track he or she has followed and to state what he or she considers major accomplishments. My career started in 1936 as a Junior Forester (P-1) on the Ouachita National Forest. I spent two years there marking and scaling on several virgin shortleaf pine timber sales (railroad logged), and also worked on white oak stave sales. Other jobs involved cruising for sales appraisals and management plan revisions, and administrative assistant ranger chores. 

My transfer to the Ozark National Forest on the supervisors' staff as timber management assistant (ultimately promoted to assistant forester (P-2)) lasted three years and gave me more experience in large white oak sales and appraisals, as well as working with other hardwoods and medium-sized shortleaf pines. In September of 1941, I enlisted in the U.S. Naval Reserve (V-7) and after nearly four months' schooling was commissioned ensign and spent three months training in torpedoes. I helped put the newly commissioned destroyer U.S.S. Caldwell in commission in June 1942 and fought the rest of WWII in the Aleutians and the SouthPacific as gunnery officer on U.S.S. Caldwell and a second newly commissioned destroyer, the U.S.S. Rowan. I was promoted to LCDR in 1946 and released.
 
Upon return to USFS Region 8 in January 1946 after three months on several details to assist in management plan revisions, I was assigned to the supervisor's staff of the Florida National Forests as associate forester (P-3). There, I was responsible for probably the last naval store’s appraisal on any National Forest in the US. Other jobs involved appraising timber in the deep swamps and sand pine on dry sandy hills. 
In October of 1946, I accepted a promotion to silviculturalist (P-4) and a transfer to the Southern Forest Experiment Station in New Orleans, where I remained for 14 years (promoted to GS-12 in 1950). In 1951 I was promoted to Division Chief (GS-13) of Forest Management Research, Forest Genetics Research, Forest Fire Research, Forest Pathology Research and Watershed Management Research. In 1958 my grade was raised to GS-14. 

I was promoted to Research Forester (GS-15) in December 1960, and transferred to head up a Pioneering Research Unit (the first of such units in the USFS). The scope of the research was broad-forest mensuration. I reported directly to the deputy chief of the USFS in charge of research. The headquarters of the unit was initially in Berkeley, CA, with its office in the University of California School of Forestry and with fiscal and clerical services furnished by the Pacific Southwest Forest Experiment Station. In 1968, my grade was reclassified to GS-16 and I transferred the headquarters of the Pioneering Unit to Atlanta, Ga. with an office provided by USFS Region 8--which also provided secretarial service for which it was reimbursed. The Southeastern Forest Experiment Station provided fiscal and publication services. I retired June 8, 1974, after more than 37 years of service. 

I was later appointed an adjunct professor at the University of Florida’s School of Forest Resources and Conservation in 1977 and gave a number of lectures and sat on several Masters and PhD committees. The University of Florida awarded me an honorary Doctor of Science degree in 1986. 
I have selected 25 of my total 56 publications as constituting worthwhile contributions to history, mathematics, or forestry (primarily measurement or sample design). They can be classified in three time periods: those that appeared while I was at the Southern Forest Experiment Station; those that appeared while I was a Pioneering Unit in Forestry Mensuration; and those that appeared while I was an adjunct professor at the University of Florida School of Forest Resources and Conservation.

1946-1960 Southern Forest Experiment Station

1952 Plotless timber estimates–new, fast, easy. J.For. 50:32-37.1952 Shortcuts for cruisers and scalers. USFS Southern Forestry Experiment Station Occ. Paper 126. 24pp.
1954 New tree measurement concepts: Height accumulation, giant tree, taper, and shape. USFS So. For. Exp. Sta. Occ. Paper 134. 32 pp.
1955 Better diagnosis and prescription in southern forest management. USFS Southern Forestry Experiment Station Occ. Paper 145. 27pp.
1957 (With W.S. Stover). Point-sampling compared with plot-sampling in Southeast Texas. For. Sci. 3:2-14.
1958 Point-sampling and line-sampling: Probability theory, geometric implication, synthesis. USFS So. For. Exp. Sta. Occ. Paper 160. 64pp.

1961-1974 Pioneering Unit (Berkeley, CA and Atlanta, GA)

1963 Optical dendrometers for out-of-reach diameters. For. Sci. Monograph 4. 47pp., illus.
1964 Some suggestions for better sample-tree management. P. 36-42 in Proc. of meeting of Soc. Amer. For. Boston.
1965 Three-pee sampling theory and program “THRP” for computer generation of selection criteria. USFS Research Paper PSW-21. 53pp., illus.1966 Tree form: Definition, interpolation, extrapolation. For. Chron. 42:444-457.
1967 The gains from sample-tree selection with unequal probabilities. J. For. 65:203-206.
1967 REX-Fortran 4 system for combinatorial screening or conventional analysis of multivariate regressions. USFS Research Paper PSW -44. 47pp.
1971   STX 1-11-71 for dendrometry of multistage 3P samples. USDA For. Serv. Pub. No. FS 277, Washington, D.C. 63pp.
1973 ? cation and forest inventory. J. For. 71:84-85.
1974 STX 3-3-73: Tree content and value estimation using various sample designs, dendrometry methods, and V-S-L coefficients. USFS Research Paper SE-117. 112pp.

1975-1994 Personal Research at University of Florida School of Forest Resources and Conservation

1976 Approximate sampling variance of adjusted 3P estimates. For. Sci. 22:173-176.
1979 3P sampling theory, examples, and rationale. USDI-BLM Tech. Note 31. 18pp.
1980 Avoiding dendrometry bias when trees lean or taper. For. Sci. 26:203-215.
1981 Measuring trees that lean, fork, crook, or sweep. J. For. 78:89-92.
1982 Plane and hemispheric trigonometry: Identities and geometry. Univ. of Florida School or Forest Resources and Conservation. 24pp.
1983 History of the florida society of american foresters: 1900-1982. Florida Society of American Foresters, Gainesville, FL. 25ppp., illus.
1987 Furnival, G.M., T.G. Gregoire and L.R. Grosenbaugh). Adjusted inclusion probabilities with 3P sampling. For. Sci. 33:617-631.
1991 Tilted tree hypsometry. For Sci. 37:1581-1590.
1994 Some new equations and constraints useful in analysis of serial repayment or investment. North. J. Appl. For. 11:58-62.