Hi Jim,
Regarding your post #41:
This photo is actually taken in Sola-Stavanger.
https://digitaltmuseum.no/0210188672...-inne-i-hangar
And "Rökning forbudt" is Norwegian. I asked around, and got an answer from a language expert (thanks Ephraim). He says it is Norwegian, in their most common written language, "bokmål". And he gives two other examples of "Rökning forbudt":
https://skanfil.no/auksjon/reklame-og-l
https://www.europeana.eu/en/item/441/_021017517684
Cheers Hans