536 Illinois Natural History Survey Bulletin Vol. 23, Art. 5 



U. S. Department of Commerce 



1936. United States Census of Agriculture: 1935. Vol.1, xxxix+950 pp. 



Terres, J. Kenneth 



1939. Gray squirrel utilization of elm. Jour. Wildlife Mgt. 3(4): 358— 9. 



Terrill, H. V. 



1941. A preliminary study of the western fox squirrel, Sciurus niger rufiventer (Geoffroy), 

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Whitaker, H. L. 



1939. Fox squirrel utilization of Osage orange in Kansas. Jour. Wildlife Mgt. 3(2) : 117. 1 pi. 



Woods, Gordon T. 



1941. Mid-summer food of gray squirrels. Jour. Mammal. 22(3) : 321. 



Yeager, Lee E. 



1936. Fox squirrel seriously damages elm tree. Jour. Mammal. 17(4): 417— 8. 



1942. Coal-stripped land as a mammal habitat, with special reference to fur animals. Am. 

 Midland Nat. 27(3): 613-35. 8 figs. 



Yeatter, Ralph E., and David H. Thompson 



1943. Cottontails, tularemia and weather. 111. Cons. 8(4): 6—7, 36. Illus. 



