Zlatica contacted me off board and sent me the info you're looking for. I see that someone found them in the 1920 census. It is my opinion that the census taker made a mistake and while the first two people (Waldok & Mary) were named Wyskosiski, he inadvertently carried that name forward for Tony & Julia. Note that Tony & Julia were living on Spencer Street, while Waldok & Mary were living on Cumble Avenue. Or it is possible that they are Julia's brother and sister-in-law, and there was confusion by the census taker.