The document dates back to November 1918, and had been kept by a family of Latvian descent in Ireland, until today.

An envelope with the inscription "Latvian Legation" contains several documents, including a business card of Zigfrīds Anna Meierovics with an address in London, from the time when the Republic of Latvia had already been proclaimed in Riga on November 18, but the news of it had not yet reached London.

"November 22. He knows that the state of Latvia has been pro...