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Text File  |  1995-06-11  |  688b  |  22 lines
  1.  
  2.  
  3.  
  4.                                                     Appendix H
  5.                                                    Source Codes
  6.  
  7. The source codes specify the original sources of complete chains 
  8. and landmark features.
  9.  
  10. Value    Description
  11.  
  12. " "        Not Documented Elsewhere
  13. "A"      Updated 1980 GBF/DIME-File
  14. "B"      USGS 1:100,000-Scale DLG-3 File
  15. "C"      Other USGS Map
  16. "D"      Census Bureau Update Prior to Enumeration Operations
  17. "E"      Census Bureau Enumerator Update
  18. "F"      Census Bureau Update from Other Operations
  19. "G"      Unconfirmed Local Official Updates
  20. "H"      Census Bureau Update Post-1990 Operations
  21. "I"       TIGER--Master Address File Building Operations
  22.