AL,ALABAMA
AK,ALASKA
AZ,ARIZONA
AR,ARKANSAS
CA,CALIFORNIA
CO,COLORADO
CT,CONNECTICUT
DE,DELAWARE
DC,DISTRICT OF COLUMBIA
FL,FLORIDA
GA,GEORGIA
HI,HAWAII
ID,IDAHO
IL,ILLINOIS
IN,INDIANA
IA,IOWA
KS,KANSAS
KY,KENTUCKY
LA,LOUISIANA
MA,MASSACHUSETTS
MD,MARYLAND
ME,MAINE
MI,MICHIGAN
MN,MINNESOTA
MO,MISSOURI
MS,MISSISSIPPI
MT,MONTANA
NC,NORTH CAROLINA
ND,NORTH DAKOTA
NE,NEBRASKA
NH,NEW HAMPSHIRE
NJ,NEW JERSEY
NM,NEW MEXICO
NV,NEVADA
NY,NEW YORK
OH,OHIO
OK,OKLAHOMA
OR,OREGON
PA,PENNSYLVANIA
RI,RHODE ISLAND
SC,SOUTH CAROLINA
SD,SOUTH DAKOTA
TN,TENNESSEE
TX,TEXAS
UT,UTAH
VA,VIRGINIA
VT,VERMONT
WA,WASHINGTON
WI,WISCONSIN
WV,WEST VIRGINIA
WY,WYOMING
AS,AMERICAN SAMOA
GU,GUAM
MP,NORTHERN MARIANA ISLANDS
PR,PORTO RICO
UM,MIDWAY ISLANDS
VI,VIRGIN ISLANDS
AB,Alberta
BC,British Columbia
MB,Manitoba
NB,New Brunswick
NL,Newfoundland and Labrador
NS,Nova Scotia
NT,Northwest Territories
NU,Nunavut
ON,Ontario
PE,Prince Edward Island
QC,Quebec
SK,Saskatchewan
YT,Yukon Territory
DW,DCW Europe and North Asia
DX,DCW South Asia
DY,DCW North America
DZ,DCW South America and Africa
PN,Placenames