aadcg

Australian Antarctic Data Centre Antarctic Gazetteer (Australian Antarctic Data Centre)

acgms

Atlas of Canada Gazetteer Map Service (Natural Resources Canada)

ahcb

Atlas of Historical County Boundaries (Newberry Library)

bcgnis

BC Geographical Names Information System (BCGNIS) (Government of British Columbia)

bnlq

Banque de noms de lieux du Québec (Commission de toponymie du Québec)

bound

Bounding Box (Klokan Technologies)

cbf

Cartographic Boundary Files (U.S. Census Bureau)

cga

Composite Gazetteer of Antarctica (Scientific Committee on Antarctic Research (SCAR))

cgndb

Canadian Geographical Names Database (Natural Resources Canada)

cgotw

Columbia Gazetteer of the World (Columbia University Press)

csa

Tirion, Wil. The Cambridge star atlas (Cambridge, UK ; New York: Cambridge University Press)

cwg

Cambridge world gazetteer: a geographical dictionary (Cambridge ; New York: Cambridge University Press)

darome

Digital Atlas of the Roman Empire

dkcaw

DK complete atlas of the world (New York: Dorling Kindersley Publishing)

edm

Enciclopedia de México (Ciudad de México: Enciclopedia de México)

erpn

Scott, Andrew. The encyclopedia of raincoast place names: a complete reference to coastal British Columbia (Madeira Park, BC: Harbour Publishing)

esriarc

ESRI ArcView

fnib

Foreign names information bulletin (Washington, D.C.: Defense Mapping Agency)

gbos

Ordnance Survey (Great Britain Ordnance Survey)

geoapn

GeoScience Australia Place Names (GeoScience Australia)

geobase

geoba.se (Geoscience Australia)

geogndb

Geographic Names Database (GeoNameBase.com)

geonames

GeoNames

geonet

NGA GEOnet Names Server (GNS) (National Geospatial-Intelligence Agency)

gettytgn

Getty Thesaurus of Geographic Names Online (J. Paul Getty Trust)

ghpn

Ghana Place Names (Ghana Place Names Project)

glogaz

Global Gazetteer (Falling Rain Genomics)

gnis

Geographic Names Information System (GNIS) (United States Geological Survey, Board on Geographic Names)

gnrnsw

Geographical Names Register of NSW (New South Wales Government)

gnt

Gazetteer of the Northwest Territories (Government of the Northwest Territories) [PDF: 17000 KB]

goj

Gazetteer of Japan (Geographical Survey Institute, and the Hydrographic and Oceanographic Department of the Japan Coast Guard)

gooearth

Google Earth

gpn

Gazetteer of Planetary Nomenclature

gufn

GEBCO Gazetteer of Undersea Feature Names - General Bathymetric Chart of the Oceans (GEBCO)

inmun

Index Mundi (IndexMundi)

knab

Kohanimeandmebaas (KNAB) (Eesti Keele Instituut)

lwip

Ramsar List of Wetlands of International Importance (Ramsar)

mapland

Maplandia.com: Google maps world gazetteer

margaz

Marine Gazetteer (Marineregions.org)

mwgd

Merriam-Webster's Geographical Dictionary (Springfield, MA: Merriam-Webster, Inc.)

natmap

The National Map-Boundaries (USGS) (U.S. Geological Survey)

ngmdbeh

NGMDB extent helper (USGS National Geologic Map Database)

nlaci

Newfoundland and Labrador Abandoned Communities Index

nsgn

Nova Scotia Geographical Names (Province of Nova Scotia)

ntpnr

NT Place Names Register (Place Names Committee for the Northern Territory)

nws

Northwest Waterfall Survey

nzggn

New Zealand gazetteer of official geographic names (New Zealand Geographic Board Nga Pou Taunaha o Aotearoa (NZGB))

nzpnd

New Zealand place names database (New Zealand Geographic Board Nga Pou Taunaha o Aotearoa (NZGB))  [Archived]

other

Other (A source other than one for which a unique code has been established)

peakbag

Peakbagger.com

pleiades

Pleiades: a gazetteer of past places

pnosa

PlaceNames Online: South Australian State Gazetteer (Government of South Australia, Department for Transport, Energy and Infrastructure)

pwme

Peakware World Mountain Encyclopedia (Peakware)

qpns

Queensland Place Names Search (Queensland Government)

rsd

Ramsar Sites Database (Ramsar)

sagns

South African Geographical Names System (South African Department of Arts and Culture)

taw

The Times atlas of the world (New York: Times Books)

usdp

The United States dictionary of places (New York: Somerset Publishers)

volwrld

Volcano World (Oregon Space Grant Consortium)

vow

Volcanoes of the World

wdpa

World Database on Protected Areas (World Commission on Protected Areas)

wfbcia

The World Factbook (Washington, D.C.: Central Intelligence Agency)

whl

World Heritage List (UNESCO)

wikiped

Wikipedia

wld

World Lake Database (International Lake Environment Committee Foundation)

[formerly called World Lakes Database]

wpntpl

Washington Place Names (Tacoma Public Library)