2 BULLETIN 1119, U. S. DEPARTMENT OF AGRICULTURE. 
valuations, thus compiling in one volume the entire lumber produc- 
tion figures of the Government which are regarded as sufficiently 
reliable and comparable for ordinary reference. 
Diagrams have been introduced to illustrate other features of in- 
terest, such as the national lumber production during the past cen- 
tury, production by the several lumbering regions for 50 years, 
numerous curves of production by species, the quantity and mill 
value of lumber consumed per capita since 1890, tne trend of prices 
of yellow pine and Douglas fir, and the relation of annual growth to 
consumption. 
ACKNOWLEDGMENTS. 
The 1920 statistics for the western States were collected through 
the district offices of the Forest Service at Missoula, Denver, Albu- 
querque, Ogden, San Francisco, and Portland. The reports for New 
York were collected by the New York Conservation Commission. 
The work for the rest of the States east of the Rocky Mountains was 
done in the Washington office of the Forest Service. 
Acknowledgment is made for assistance in the collection and com- 
pilation of reports on which this bulletin is based to A. B. Strough, 
New York State Conservation Commission; and to C. N. Whitney, 
District 1; Miss F. Ruth Waters, District 2; Quincy Randies, Dis- 
trict 3; N. J. Fetherolf, District 4; C. L. Hill, District 5; and C. W. 
Gould, District 6, of the Forest Service. 
The National Lumber Manufacturers' Association, through its affili- 
ated organizations, assisted in securing reports from certain mills. 
As in previous years, the Bureau of the Census, U. S. Department of 
Commerce, extended helpful cooperation. 
