My maternal grandparents were born in Bohemia. Various census entries have them reporting their birth in Bohemia, Chechoslovakia, and Jugoslavia. (spelling matches entries) Maternal grandfather was Heinrick Vocelka (born 1881). Vocelka could be an Americanization. Maternal grandmother was born Marie or Mary Gaspar in 1883 in "Spice Bukovec, Harvart".
Questions:
1. Is "Spice Bukovec" the name of a village? What is "Harvart" - the name of a region? Any references I could research?
2. Can find no info on immigration to the U.S. I do know they first lived in Chicago area, then Lincoln, NE, then Antigo, Langlade, Wisconsin. Other than ancestry.com, what references can I use to obtain immigration information.

Thanks.