- ... that the PWS-6 (pictured) was the first Polish aircraft fitted with slats – but the prototype is the only model ever produced?
- ... that although Princess Louise of Prussia was noble-born, her German-Polish daughter Elisabeth Radziwiłł was considered an unsuitable marriage prospect for future emperor Wilhelm I?
- ... that Polish lawyer Henryk Cederbaum was expelled from the bar after defending a Polish shopkeeper who accused the Russian governor-general's wife of shoplifting?
- ... that the anti-Nazi resistance group " Olimp", organized in 1941 by members of the Polish minority in Breslau, was named after Mount Olympus because of their remote main meeting place?