LITERATURE CITED 



Benson, Robert E. 



1965. Export of Christmas trees from Montana in 1964. U.S. Forest Serv. Res. 

 Note INT- 38, 4 p. 



1967. Montana Christmas trees: over 80 million in three decades. Amer. Christmas 

 Tree Growers J. 11(3): 21-22, 



Burlison, Vernon H., and Franklin H. Pitkin. 



1962. Christmas tree growing in Idaho. University of Idaho, Forest Wildlife and 



Range Exp. Sta., Res. Note 20, 25 p. 



Douglass, Bernard S. 



1963. Leader growth control for Douglas-fir. Amer. Christmas Tree Growers J. 



7(2): 13-14, 55-56. 



1965. Growing Christmas trees in western United States. J. Forest, 63(11): 862- 

 864. 



1967. Development of high quality sheared Douglas-fir Christmas trees. U.S.D.A. 



Forest Serv., Pacific Northwest Region, State and Private Forestry, Manag- 

 ing Your Woodland, How To Do It Guides, No. 12, 21 p. 



Hutchison, S. Blair, and Ben M. Huey. 



1949. Suggested Montana Douglas-fir Christmas tree standards. U.S.D.A. Forest 

 Serv., Northern Rocky Mountain Forest and Range Exp. Sta., Sta. Pap. 18, 

 13 p. 



Kintigh, Robert G. 



1965. Some results of succulent shearing of Douglas-fir in western Oregon. Amer. 

 Christmas Tree Growers J. 9(2): 25-26. 



Roe, Arthur L. 



1948. What caused "blight" on Christmas trees in the Northern Rockies in 1947. 



U.S.D.A. Forest Serv., Northern Rocky Mountain Forest and Range Exp. Sta, 

 Res. Note 65, 5 p, 



U,S. Department of Agriculture. 



1962. United States standards for grades of Christmas trees. U.S.D.A. Agr. Mar- 

 keting Serv,, Washington, D.C., 12 p. 



Wellner, C. A., and A. L. Roe. 



1947. Management practices for Christmas tree production. U.S.D.A. Forest Serv., 

 Northern Rocky Mountain Forest and Range Exp, Sta., Sta. Pap. 9, 21 p. 



Wilson, Alvin K. 



1957. A new high in Montana Christmas tree shipments. U.S.D.A. Forest Serv., 

 Intermountain Forest and Range Exp. Sta. Res. Note 44, 4 p. 



Wright, Jonathan W. 



1965. Choice of species for Christmas tree plantations. J. Forest. 63(11): 844- 

 846. 



AFLC/HAFB, Ogden 



17 



