I, too, am looking to "fill the gaps" in my family tree. My grandfather's name was John Bartek and he married Zofi Kukla (both probably anglicized), both having immegrated srom Slovakia. We have always been told that grandpa had 2 bothers - Josef and Andrew - and 2 sisters Mary & Susan (no doubt anglicized.) My grandfather settled into the coal mines of central Pennsylvania. We have located a record of John & Zofi's marriage in Luzerne, Pennsylvania. On their children's birth certificates, the surname was spelled 3 different ways...Bartek, Barteck, and Bartic. Leads me to believe that my grandparents were illiterate and thus unable to tell the officials how to correctly spell their surname. Anyone who has info or has questions, please email me.