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  1. US Agriculture Dept, Forest Service, HE Sealing, HF Hedge (2)
  2. US Agriculture Dept, Forest Service, Henry Graves, CB Gosorn, PI Dennee (1)
  3. US Agriculture Dept, Forest Service, John Burgess, AC Jacquith (1)
  4. US Agriculture Dept, Forest Service, US Geological Survey, John Burgess, AC Jacquith (1)
  5. US Agriculture Dept, US Forest Service, Ann Alfred (2)
  6. US Agriculture Dept, US Geological Survey, FE Washburn, RF Burrus (1)
  7. US AIR FORCE (36)
  8. US Air Force (2)
  9. US Air Force Photo (2)
  10. US Air Force, JT Banner & Assoc (1)
  11. US Army (4)
  12. US Army Air Corps (2)
  13. US Army Air Service, 20th Photo Section (1)
  14. US ATOMIC ENERGY COMMISSION (4)
  15. US Constructing Quartermaster Office-Cheyenne (1)
  16. US Corp of Army Engineers, Major RC Kuldell, A Drouet, OH Meier (1)
  17. US Corp of Engineers (1)
  18. US Corps of Engineers, US Dept of the Platte, Captain W. S. Stanton, R Ekoehneman (1)
  19. US Department of Agriculture (1)
  20. US Department of Agriculture, US Government Printing Office (2)