When a few of my ancestors arrived in the US (early 20th C), two of them said that contact "in the old country" lived in Suwalki, and street names were given. I've looked at the Suwalki Map from 1919-1939 (found at J'gen, IIRC), but these street names aren't there. They arrived between 1911 and 1913, so it was before the earliest date on the map I mentioned.
My great aunt arrived in April 1913, and said that her father was living at 67 Bazarni Ul. (street), although he was in the US at the time, having arrived in December 1911. (Her father said that the relative in OC was his wife, living in "Suwalk, Russia.") My G-aunt's mother arrived in August 1913, stating that *her* father was living at --what looks like -- Uspanski Ul., in Suwalk.
So, I'm hoping that there are records or a map *somewhere* that list these two street names (Bazarni and Uspanski), so that I can know whether they actually lived in that town, or in another town in that Gub.