ACKNOWLEDGMENT 
Many individuals assisted in assembling material for this report. Special 
acknowledgments are due to Ralph M. Nelson who gathered much of the 
basic information for the first draft. Much credit is also due E. V. Roberts, 
Regional Survey Director at the time of the field survey (1940). Field 
inventory was under the direction of John Carow. Data on inventory, 
growth, and drain were compiled under the direction of G. E. Morrill, T. C. 
Evans, A. D. Toler, A. S. Todd, Jr., and J. F. McCormack. Unit reports 
were prepared by J. W. Cruikshank, W. A. Duerr, T. C. Evans, G. E. Morrill, 
and Thomas Lotti. J. W Girard had principal responsibility for the prep- 
aration of volume tables. The statistical check of this report was made by 
Mary L. Denoyer and Agnes Creasman. 
