Figure 57. A forest officer at work on a high mountain peak mak- 

 ing a plane-table survey and timber estimate of National Forest 

 lands. Photo by the author. 



Figure 58. A government timber cruiser's summer camp. These 

 cruisers get a fairly accurate estimate of Uncle Sam's timber re- 

 sources at a cost of 'from 2 to 5 cents an acre. Photo bv the author. 



