254 LOGGING 
Thompson, Jas. R.: Use of Electricity on Logging Operations. The 
Timberman, August, 1910, p. 64L. 
ViNNEDGE, R. W.: A Composite Flying Machine. The Timberman, Oct. 
1913, pp. 33 to 36 incl. 
ViNNEDGE, R. W. : Overhead Logging Systems. The Timberman, Nov. 
1922, pp. 45-50. 
Williams, Asa S.: Logging by Steam. Forestry Quarterly, Vol. VI, No. 
1, pp. 1-33. 
