ii 
ACKNOWLEDGEMENTS 
The authors wish to thank Mr. Donald Hall of RADC 
for his invaluable contributions in the compilation of 
data on the AS-11B-1 and the evaluations of the orthophoto- 
stereomate products; Mr. Anthony Fanelli and the RADC/IRR 
photo laboratory for the photo processing; and Mr. James 
Tremlett for the color orthophoto.