German regional gazetteers and Wikipedia articles for Prussian-era and present-day localities · Meyers Gazetteer; GOV/genealogy.net; AGOFF; Wikipedia (de/en)
Karlsruhe, Deutsch-Krone, Marienwerder, Westpreussen, Preussen
Meyers Gazetteer entry 'Karlsruhe 3)', the only Karlsruhe in West Prussia in 1912. Modern name and coordinate as for row 4010: de.wikipedia 'Kreis Deutsch Krone' and pl.wikipedia 'Lugi Waleckie'.