THE AUTHOR 



KARL E. MOESSNER, research forester, Intermountain Forest 

 and Range Experiment Station, has used aerial photos most of 

 his 30-year career with the Forest Service. Since World 

 War II, where he served as a photo interpreter with the 8th 

 Air Force, he has been engaged in photo interpretation 

 research primarily in the field of Forest Survey. Author of 

 more than 40 papers and notes on the various phases of photo 

 interpretation, his experience gives him a unique knowledge 

 of the uses of aerial photos by the land manager . 



