For locations in Eastern Europe, the index generally categorizes them by Gubernia (province) rather than modern-day country. Place names are standardized to those of the late-19th, early-20th centuries, before the First World War.
Austria
Niederosterreich
Azerbaijan
Bessarabia
Khotin
Kishinev
Canada
Alberta
New Brunswick
Ontario
Saskatchewan
Chernigov
Chernigov
Glukhov
Niezhin
Colorado
Courland
Fridrikhshtat
Cuba
Ekaterinoslav
Ekaterinoslav
Galicia
Bohorodczany
Czortkow
Horodenka
Husiatyn
Jaslo
Krakow
Lancut
Mielec
Nadworna
Podhajce
Skalat
Sniatyn
Stanislawow
Tarnobrzeg
Tlumacz
Germany
Bad-Duercheim
Elsass-Lothringen
Nieder-Elsass
Gailingen-am-Hochrhein
Rhineland-Palatinate
Gibraltar
Kalisz
Sieradz
Slupca
Wielun
Kaluga
Zhisdra
Kharkov
Kharkov
Kherson
Odessa
Livland
Derpt
Riga
Lodzkie
Lublin
Lublin
Mexico
Quintana Roo
Mogilev
Bykhov
Mogilev
Rogachev
Moldavia
Falciu
Netherlands
New Brunswick
Nizhniy Novgorod
Nizhniy Novgorod
North Dakota
Divide County
Nova Scotia
Oklahoma
Washington
Orenburg
Chelyabinsk
Perm
Perm
Piotrkow
Lodz
Nowo-Radomsk
Plock
Ciechanow
Lipno
Plock
Przasnysz
Sierpc
Podolia
Bratslav
Kamenets Podolskiy
Poland
Krakow
Oswiecim
Lublin
Sokolow
Mazowieckie
Preussen
Westpreussen
Rhodesia
Siedlce
Garwolin
Radzyn
Wegrow
Slovakia
Zemplén
Suwalki
Kalwarya
Marjampol
Sejny
Suwalki
Wylkowyszki
Ukraine
Subcarpathia
Maramaros
Vilna
Oshmyany
Sventsyany
Vilejka
Vilna
Vitebsk
Lepel
Rezhitsa
Vitebsk
Warszawa
Pultusk
Radzymin
Wisconsin