Well, it looks like our friends at The Polish Mining Community have changed their name to The Polish Pioneers of Calumet, MI. For expediency, I will now refer to them as PPCM. They have also just posted a great piece on the Polish Catholic Stanislaus Kostki Benevolent Society of Calumet, an organization that Stanislaus Pytlewski served for as treasurer for a few years in the beginning of the 20th century. In the document posted on the PPCM, you may notice John Zwierzchowski. John Zwierzchowski was the father of Stanislaus (Stanley) Zwierchowski, and Stanley married Stanislawa (Stella) Pytlewski.
Correction: John Zwiezchowski married Theresa Pytlewski, not Stella Pytlewski as previously mentioned.