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1. Alabama Block Groups 2002

2002. Geographic Data Technology, Inc. (GDT). Alabama Block Groups represents the U.S. Census block groups of Alabama. Environmental Systems Research Institute, Inc. (ESRI).

2. Alabama Major Roads 2002

1999. Geographic Data Technology, Inc. (GDT). Alabama Major Roads represents interstate, U.S., and state highways and other major thoroughfares within Alabama. Environmental Systems Research Institute, Inc. (ESRI).

3. Alabama Rivers 2002

1997. Geographic Data Technology, Inc. (GDT). Alabama Rivers represents streams and rivers within Alabama. Environmental Systems Research Institute, Inc. (ESRI).

4. Alabama Tracts 2002

2002. Geographic Data Technology, Inc. (GDT). Alabama Tracts represents the U.S. Census tracts and block numbering areas (BNA) of Alabama. Environmental Systems Research Institute, Inc. (ESRI).

5. Alabama ZIP Code Areas 2002

2001. Geographic Data Technology, Inc. (GDT). Alabama ZIP Code Areas represents five-digit ZIP Code areas used by the U.S. Postal Service to deliver mail more effectively. The first digit of a... Environmental Systems Research Institute, Inc. (ESRI).

6. Alaska Block Groups 2002

2002. Geographic Data Technology, Inc. (GDT). Alaska Block Groups represents the U.S. Census block groups of Alaska. Environmental Systems Research Institute, Inc. (ESRI).

7. Alaska Major Roads 2002

1999. Geographic Data Technology, Inc. (GDT). Alaska Major Roads represents interstate, U.S., and state highways and other major thoroughfares within Alaska. Environmental Systems Research Institute, Inc. (ESRI).

8. Alaska Rivers 2002

1997. Geographic Data Technology, Inc. (GDT). Alaska Rivers represents streams and rivers within Alaska. Environmental Systems Research Institute, Inc. (ESRI).

9. Alaska Tracts 2002

2002. Geographic Data Technology, Inc. (GDT). Alaska Tracts represents the U.S. Census tracts and block numbering areas (BNA) of Alaska. Environmental Systems Research Institute, Inc. (ESRI).

10. Alaska ZIP Code Areas 2002

2001. Geographic Data Technology, Inc. (GDT). Alaska ZIP Code Areas represents five-digit ZIP Code areas used by the U.S. Postal Service to deliver mail more effectively. The first digit of a ... Environmental Systems Research Institute, Inc. (ESRI).

11. Arizona Block Groups 2002

2002. Geographic Data Technology, Inc. (GDT). Arizona Block Groups represents the U.S. Census block groups of Arizona. Environmental Systems Research Institute, Inc. (ESRI).

12. Arizona Major Roads 2002

1999. Geographic Data Technology, Inc. (GDT). Arizona Major Roads represents interstate, U.S., and state highways and other major thoroughfares within Arizona. Environmental Systems Research Institute, Inc. (ESRI).

13. Arizona Rivers 2002

1997. Geographic Data Technology, Inc. (GDT). Arizona Rivers represents streams and rivers within Arizona. Environmental Systems Research Institute, Inc. (ESRI).

14. Arizona Tracts 2002

2002. Geographic Data Technology, Inc. (GDT). Arizona Tracts represents the U.S. Census tracts and block numbering areas (BNA) of Arizona. Environmental Systems Research Institute, Inc. (ESRI).

15. Arizona ZIP Code Areas 2002

2001. Geographic Data Technology, Inc. (GDT). Arizona ZIP Code Areas represents five-digit ZIP Code areas used by the U.S. Postal Service to deliver mail more effectively. The first digit of a... Environmental Systems Research Institute, Inc. (ESRI).

16. Arkansas Block Groups 2002

2002. Geographic Data Technology, Inc. (GDT). Arkansas Block Groups represents the U.S. Census block groups of Arkansas. Environmental Systems Research Institute, Inc. (ESRI).

17. Arkansas Major Roads 2002

1999. Geographic Data Technology, Inc. (GDT). Arkansas Major Roads represents interstate, U.S., and state highways and other major thoroughfares within Arkansas. Environmental Systems Research Institute, Inc. (ESRI).

18. Arkansas Rivers 2002

1997. Geographic Data Technology, Inc. (GDT). Arkansas Rivers represents streams and rivers within Arkansas. Environmental Systems Research Institute, Inc. (ESRI).

19. Arkansas Tracts 2002

2002. Geographic Data Technology, Inc. (GDT). Arkansas Tracts represents the U.S. Census tracts and block numbering areas (BNA) of Arkansas. Environmental Systems Research Institute, Inc. (ESRI).

20. Arkansas ZIP Code Areas 2002

2001. Geographic Data Technology, Inc. (GDT). Arkansas ZIP Code Areas represents five-digit ZIP Code areas used by the U.S. Postal Service to deliver mail more effectively. The first digit of ... Environmental Systems Research Institute, Inc. (ESRI).

21. California Block Groups 2002

2002. Geographic Data Technology, Inc. (GDT). California Block Groups represents the U.S. Census block groups of California. Environmental Systems Research Institute, Inc. (ESRI).

22. California Major Roads 2002

1999. Geographic Data Technology, Inc. (GDT). California Major Roads represents interstate, U.S., and state highways and other major thoroughfares within California. Environmental Systems Research Institute, Inc. (ESRI).

23. California Rivers 2002

1997. Geographic Data Technology, Inc. (GDT). California Rivers represents streams and rivers within California. Environmental Systems Research Institute, Inc. (ESRI).

24. California Tracts 2002

2002. Geographic Data Technology, Inc. (GDT). California Tracts represents the U.S. Census tracts and block numbering areas (BNA) of California. Environmental Systems Research Institute, Inc. (ESRI).

25. California ZIP Code Areas 2002

2001. Geographic Data Technology, Inc. (GDT). California ZIP Code Areas represents five-digit ZIP Code areas used by the U.S. Postal Service to deliver mail more effectively. The first digit o... Environmental Systems Research Institute, Inc. (ESRI).

26. Colorado Block Groups 2002

2002. Geographic Data Technology, Inc. (GDT). Colorado Block Groups represents the U.S. Census block groups of Colorado. Environmental Systems Research Institute, Inc. (ESRI).

27. Colorado Major Roads 2002

1999. Geographic Data Technology, Inc. (GDT). Colorado Major Roads represents interstate, U.S., and state highways and other major thoroughfares within Colorado. Environmental Systems Research Institute, Inc. (ESRI).

28. Colorado Rivers 2002

1997. Geographic Data Technology, Inc. (GDT). Colorado Rivers represents streams and rivers within Colorado. Environmental Systems Research Institute, Inc. (ESRI).

29. Colorado Tracts 2002

2002. Geographic Data Technology, Inc. (GDT). Colorado Tracts represents the U.S. Census tracts and block numbering areas (BNA) of Colorado. Environmental Systems Research Institute, Inc. (ESRI).

30. Colorado ZIP Code Areas 2002

2001. Geographic Data Technology, Inc. (GDT). Colorado ZIP Code Areas represents five-digit ZIP Code areas used by the U.S. Postal Service to deliver mail more effectively. The first digit of ... Environmental Systems Research Institute, Inc. (ESRI).

31. Connecticut Block Groups 2002

2002. Geographic Data Technology, Inc. (GDT). Connecticut Block Groups represents the U.S. Census block groups of Connecticut. Environmental Systems Research Institute, Inc. (ESRI).

32. Connecticut Major Roads 2002

1999. Geographic Data Technology, Inc. (GDT). Connecticut Major Roads represents interstate, U.S., and state highways and other major thoroughfares within Connecticut. Environmental Systems Research Institute, Inc. (ESRI).

33. Connecticut Rivers 2002

1997. Geographic Data Technology, Inc. (GDT). Connecticut Rivers represents streams and rivers within Connecticut. Environmental Systems Research Institute, Inc. (ESRI).

34. Connecticut Tracts 2002

2002. Geographic Data Technology, Inc. (GDT). Connecticut Tracts represents the U.S. Census tracts and block numbering areas (BNA) of Connecticut. Environmental Systems Research Institute, Inc. (ESRI).

35. Connecticut ZIP Code Areas 2002

2001. Geographic Data Technology, Inc. (GDT). Connecticut ZIP Code Areas represents five-digit ZIP Code areas used by the U.S. Postal Service to deliver mail more effectively. The first digit ... Environmental Systems Research Institute, Inc. (ESRI).

36. Delaware Block Groups 2002

2002. Geographic Data Technology, Inc. (GDT). Delaware Block Groups represents the U.S. Census block groups of Delaware. Environmental Systems Research Institute, Inc. (ESRI).

37. Delaware Major Roads 2002

1999. Geographic Data Technology, Inc. (GDT). Delaware Major Roads represents interstate, U.S., and state highways and other major thoroughfares within Delaware. Environmental Systems Research Institute, Inc. (ESRI).

38. Delaware Rivers 2002

1997. Geographic Data Technology, Inc. (GDT). Delaware Rivers represents streams and rivers within Delaware. Environmental Systems Research Institute, Inc. (ESRI).

39. Delaware Tracts 2002

2002. Geographic Data Technology, Inc. (GDT). Delaware Tracts represents the U.S. Census tracts and block numbering areas (BNA) of Delaware. Environmental Systems Research Institute, Inc. (ESRI).

40. Delaware ZIP Code Areas 2002

2001. Geographic Data Technology, Inc. (GDT). Delaware ZIP Code Areas represents five-digit ZIP Code areas used by the U.S. Postal Service to deliver mail more effectively. The first digit of ... Environmental Systems Research Institute, Inc. (ESRI).

41. District of Columbia Block Groups 2002

2002. Geographic Data Technology, Inc. (GDT). District of Columbia Block Groups represents the U.S. Census block groups of District of Columbia. Environmental Systems Research Institute, Inc. (ESRI).

42. District of Columbia Major Roads 2002

1999. Geographic Data Technology, Inc. (GDT). District of Columbia Major Roads represents interstate, U.S., and state highways and other major thoroughfares within District of Columbia. Environmental Systems Research Institute, Inc. (ESRI).

43. District of Columbia Rivers 2002

1997. Geographic Data Technology, Inc. (GDT). District of Columbia Rivers represents streams and rivers within District of Columbia. Environmental Systems Research Institute, Inc. (ESRI).

44. District of Columbia Tracts 2002

2002. Geographic Data Technology, Inc. (GDT). District of Columbia Tracts represents the U.S. Census tracts and block numbering areas (BNA) of District of Columbia. Environmental Systems Research Institute, Inc. (ESRI).

45. District of Columbia ZIP Code Areas 2002

2001. Geographic Data Technology, Inc. (GDT). District of Columbia ZIP Code Areas represents five-digit ZIP Code areas used by the U.S. Postal Service to deliver mail more effectively. The fir... Environmental Systems Research Institute, Inc. (ESRI).

46. Florida Block Groups 2002

2002. Geographic Data Technology, Inc. (GDT). Florida Block Groups represents the U.S. Census block groups of Florida. Environmental Systems Research Institute, Inc. (ESRI).

47. Florida Major Roads 2002

1999. Geographic Data Technology, Inc. (GDT). Florida Major Roads represents interstate, U.S., and state highways and other major thoroughfares within Florida. Environmental Systems Research Institute, Inc. (ESRI).

48. Florida Rivers 2002

1997. Geographic Data Technology, Inc. (GDT). Florida Rivers represents streams and rivers within Florida. Environmental Systems Research Institute, Inc. (ESRI).

49. Florida Tracts 2002

2002. Geographic Data Technology, Inc. (GDT). Florida Tracts represents the U.S. Census tracts and block numbering areas (BNA) of Florida. Environmental Systems Research Institute, Inc. (ESRI).

50. Florida ZIP Code Areas 2002

2001. Geographic Data Technology, Inc. (GDT). Florida ZIP Code Areas represents five-digit ZIP Code areas used by the U.S. Postal Service to deliver mail more effectively. The first digit of a... Environmental Systems Research Institute, Inc. (ESRI).

51. Georgia Block Groups 2002

2002. Geographic Data Technology, Inc. (GDT). Georgia Block Groups represents the U.S. Census block groups of Georgia. Environmental Systems Research Institute, Inc. (ESRI).

52. Georgia Major Roads 2002

1999. Geographic Data Technology, Inc. (GDT). Georgia Major Roads represents interstate, U.S., and state highways and other major thoroughfares within Georgia. Environmental Systems Research Institute, Inc. (ESRI).

53. Georgia Rivers 2002

1997. Geographic Data Technology, Inc. (GDT). Georgia Rivers represents streams and rivers within Georgia. Environmental Systems Research Institute, Inc. (ESRI).

54. Georgia Tracts 2002

2002. Geographic Data Technology, Inc. (GDT). Georgia Tracts represents the U.S. Census tracts and block numbering areas (BNA) of Georgia. Environmental Systems Research Institute, Inc. (ESRI).

55. Georgia ZIP Code Areas 2002

2001. Geographic Data Technology, Inc. (GDT). Georgia ZIP Code Areas represents five-digit ZIP Code areas used by the U.S. Postal Service to deliver mail more effectively. The first digit of a... Environmental Systems Research Institute, Inc. (ESRI).

56. Hawaii Block Groups 2002

2002. Geographic Data Technology, Inc. (GDT). Hawaii Block Groups represents the U.S. Census block groups of Hawaii. Environmental Systems Research Institute, Inc. (ESRI).

57. Hawaii Major Roads 2002

1999. Geographic Data Technology, Inc. (GDT). Hawaii Major Roads represents interstate, U.S., and state highways and other major thoroughfares within Hawaii. Environmental Systems Research Institute, Inc. (ESRI).

58. Hawaii Rivers 2002

1997. Geographic Data Technology, Inc. (GDT). Hawaii Rivers represents streams and rivers within Hawaii. Environmental Systems Research Institute, Inc. (ESRI).

59. Hawaii Tracts 2002

2002. Geographic Data Technology, Inc. (GDT). Hawaii Tracts represents the U.S. Census tracts and block numbering areas (BNA) of Hawaii. Environmental Systems Research Institute, Inc. (ESRI).

60. Hawaii ZIP Code Areas 2002

2001. Geographic Data Technology, Inc. (GDT). Hawaii ZIP Code Areas represents five-digit ZIP Code areas used by the U.S. Postal Service to deliver mail more effectively. The first digit of a ... Environmental Systems Research Institute, Inc. (ESRI).

61. Idaho Block Groups 2002

2002. Geographic Data Technology, Inc. (GDT). Idaho Block Groups represents the U.S. Census block groups of Idaho. Environmental Systems Research Institute, Inc. (ESRI).

62. Idaho Major Roads 2002

1999. Geographic Data Technology, Inc. (GDT). Idaho Major Roads represents interstate, U.S., and state highways and other major thoroughfares within Idaho. Environmental Systems Research Institute, Inc. (ESRI).

63. Idaho Rivers 2002

1997. Geographic Data Technology, Inc. (GDT). Idaho Rivers represents streams and rivers within Idaho. Environmental Systems Research Institute, Inc. (ESRI).

64. Idaho Tracts 2002

2002. Geographic Data Technology, Inc. (GDT). Idaho Tracts represents the U.S. Census tracts and block numbering areas (BNA) of Idaho. Environmental Systems Research Institute, Inc. (ESRI).

65. Idaho ZIP Code Areas 2002

2001. Geographic Data Technology, Inc. (GDT). Idaho ZIP Code Areas represents five-digit ZIP Code areas used by the U.S. Postal Service to deliver mail more effectively. The first digit of a f... Environmental Systems Research Institute, Inc. (ESRI).

66. Illinois Block Groups 2002

2002. Geographic Data Technology, Inc. (GDT). Illinois Block Groups represents the U.S. Census block groups of Illinois. Environmental Systems Research Institute, Inc. (ESRI).

67. Illinois Major Roads 2002

1999. Geographic Data Technology, Inc. (GDT). Illinois Major Roads represents interstate, U.S., and state highways and other major thoroughfares within Illinois. Environmental Systems Research Institute, Inc. (ESRI).

68. Illinois Rivers 2002

1997. Geographic Data Technology, Inc. (GDT). Illinois Rivers represents streams and rivers within Illinois. Environmental Systems Research Institute, Inc. (ESRI).

69. Illinois Tracts 2002

2002. Geographic Data Technology, Inc. (GDT). Illinois Tracts represents the U.S. Census tracts and block numbering areas (BNA) of Illinois. Environmental Systems Research Institute, Inc. (ESRI).

70. Illinois ZIP Code Areas 2002

2001. Geographic Data Technology, Inc. (GDT). Illinois ZIP Code Areas represents five-digit ZIP Code areas used by the U.S. Postal Service to deliver mail more effectively. The first digit of ... Environmental Systems Research Institute, Inc. (ESRI).

71. Indiana Block Groups 2002

2002. Geographic Data Technology, Inc. (GDT). Indiana Block Groups represents the U.S. Census block groups of Indiana. Environmental Systems Research Institute, Inc. (ESRI).

72. Indiana Major Roads 2002

1999. Geographic Data Technology, Inc. (GDT). Indiana Major Roads represents interstate, U.S., and state highways and other major thoroughfares within Indiana. Environmental Systems Research Institute, Inc. (ESRI).

73. Indiana Rivers 2002

1997. Geographic Data Technology, Inc. (GDT). Indiana Rivers represents streams and rivers within Indiana. Environmental Systems Research Institute, Inc. (ESRI).

74. Indiana Tracts 2002

2002. Geographic Data Technology, Inc. (GDT). Indiana Tracts represents the U.S. Census tracts and block numbering areas (BNA) of Indiana. Environmental Systems Research Institute, Inc. (ESRI).

75. Indiana ZIP Code Areas 2002

2001. Geographic Data Technology, Inc. (GDT). Indiana ZIP Code Areas represents five-digit ZIP Code areas used by the U.S. Postal Service to deliver mail more effectively. The first digit of a... Environmental Systems Research Institute, Inc. (ESRI).

76. Iowa Block Groups 2002

2002. Geographic Data Technology, Inc. (GDT). Iowa Block Groups represents the U.S. Census block groups of Iowa. Environmental Systems Research Institute, Inc. (ESRI).

77. Iowa Major Roads 2002

1999. Geographic Data Technology, Inc. (GDT). Iowa Major Roads represents interstate, U.S., and state highways and other major thoroughfares within Iowa. Environmental Systems Research Institute, Inc. (ESRI).

78. Iowa Rivers 2002

1997. Geographic Data Technology, Inc. (GDT). Iowa Rivers represents streams and rivers within Iowa. Environmental Systems Research Institute, Inc. (ESRI).

79. Iowa Tracts 2002

2002. Geographic Data Technology, Inc. (GDT). Iowa Tracts represents the U.S. Census tracts and block numbering areas (BNA) of Iowa. Environmental Systems Research Institute, Inc. (ESRI).

80. Iowa ZIP Code Areas 2002

2001. Geographic Data Technology, Inc. (GDT). Iowa ZIP Code Areas represents five-digit ZIP Code areas used by the U.S. Postal Service to deliver mail more effectively. The first digit of a fi... Environmental Systems Research Institute, Inc. (ESRI).

81. Kansas Block Groups 2002

2002. Geographic Data Technology, Inc. (GDT). Kansas Block Groups represents the U.S. Census block groups of Kansas. Environmental Systems Research Institute, Inc. (ESRI).

82. Kansas Major Roads 2002

1999. Geographic Data Technology, Inc. (GDT). Kansas Major Roads represents interstate, U.S., and state highways and other major thoroughfares within Kansas. Environmental Systems Research Institute, Inc. (ESRI).

83. Kansas Rivers 2002

1997. Geographic Data Technology, Inc. (GDT). Kansas Rivers represents streams and rivers within Kansas. Environmental Systems Research Institute, Inc. (ESRI).

84. Kansas Tracts 2002

2002. Geographic Data Technology, Inc. (GDT). Kansas Tracts represents the U.S. Census tracts and block numbering areas (BNA) of Kansas. Environmental Systems Research Institute, Inc. (ESRI).

85. Kansas ZIP Code Areas 2002

2001. Geographic Data Technology, Inc. (GDT). Kansas ZIP Code Areas represents five-digit ZIP Code areas used by the U.S. Postal Service to deliver mail more effectively. The first digit of a ... Environmental Systems Research Institute, Inc. (ESRI).

86. Kentucky Block Groups 2002

2002. Geographic Data Technology, Inc. (GDT). Kentucky Block Groups represents the U.S. Census block groups of Kentucky. Environmental Systems Research Institute, Inc. (ESRI).

87. Kentucky Major Roads 2002

1999. Geographic Data Technology, Inc. (GDT). Kentucky Major Roads represents interstate, U.S., and state highways and other major thoroughfares within Kentucky. Environmental Systems Research Institute, Inc. (ESRI).

88. Kentucky Rivers 2002

1997. Geographic Data Technology, Inc. (GDT). Kentucky Rivers represents streams and rivers within Kentucky. Environmental Systems Research Institute, Inc. (ESRI).

89. Kentucky Tracts 2002

2002. Geographic Data Technology, Inc. (GDT). Kentucky Tracts represents the U.S. Census tracts and block numbering areas (BNA) of Kentucky. Environmental Systems Research Institute, Inc. (ESRI).

90. Kentucky ZIP Code Areas 2002

2001. Geographic Data Technology, Inc. (GDT). Kentucky ZIP Code Areas represents five-digit ZIP Code areas used by the U.S. Postal Service to deliver mail more effectively. The first digit of ... Environmental Systems Research Institute, Inc. (ESRI).

91. Louisiana Block Groups 2002

2002. Geographic Data Technology, Inc. (GDT). Louisiana Block Groups represents the U.S. Census block groups of Louisiana. Environmental Systems Research Institute, Inc. (ESRI).

92. Louisiana Major Roads 2002

1999. Geographic Data Technology, Inc. (GDT). Louisiana Major Roads represents interstate, U.S., and state highways and other major thoroughfares within Louisiana. Environmental Systems Research Institute, Inc. (ESRI).

93. Louisiana Rivers 2002

1997. Geographic Data Technology, Inc. (GDT). Louisiana Rivers represents streams and rivers within Louisiana. Environmental Systems Research Institute, Inc. (ESRI).

94. Louisiana Tracts 2002

2002. Geographic Data Technology, Inc. (GDT). Louisiana Tracts represents the U.S. Census tracts and block numbering areas (BNA) of Louisiana. Environmental Systems Research Institute, Inc. (ESRI).

95. Louisiana ZIP Code Areas 2002

2001. Geographic Data Technology, Inc. (GDT). Louisiana ZIP Code Areas represents five-digit ZIP Code areas used by the U.S. Postal Service to deliver mail more effectively. The first digit of... Environmental Systems Research Institute, Inc. (ESRI).

96. Maine Block Groups 2002

2002. Geographic Data Technology, Inc. (GDT). Maine Block Groups represents the U.S. Census block groups of Maine. Environmental Systems Research Institute, Inc. (ESRI).

97. Maine Major Roads 2002

1999. Geographic Data Technology, Inc. (GDT). Maine Major Roads represents interstate, U.S., and state highways and other major thoroughfares within Maine. Environmental Systems Research Institute, Inc. (ESRI).

98. Maine Rivers 2002

1997. Geographic Data Technology, Inc. (GDT). Maine Rivers represents streams and rivers within Maine. Environmental Systems Research Institute, Inc. (ESRI).

99. Maine Tracts 2002

2002. Geographic Data Technology, Inc. (GDT). Maine Tracts represents the U.S. Census tracts and block numbering areas (BNA) of Maine. Environmental Systems Research Institute, Inc. (ESRI).

100. Maine ZIP Code Areas 2002

2001. Geographic Data Technology, Inc. (GDT). Maine ZIP Code Areas represents five-digit ZIP Code areas used by the U.S. Postal Service to deliver mail more effectively. The first digit of a f... Environmental Systems Research Institute, Inc. (ESRI).