chpater-15.xtml line 20
On that occasion he had shown me about the trade union headquarters known as the <i xml:lang="ru-Latn">Dom Soyusov</i>, and explained how the organization worked...
This looks like a similar situation to the other proper noun that's also a Russian phrase. I think "Dom Soyusov" literally means something like "Union House" or "House of Unions."
chpater-15.xtml
line 20On that occasion he had shown me about the trade union headquarters known as the <i xml:lang="ru-Latn">Dom Soyusov</i>, and explained how the organization worked...