I am at a standstill right now. I can go as far as the names of my great great grandparents(John Raska and Augustina Litzeua). I don't know any dates on John Raska and I can't find anything for him! It is frustrating..don't know where to look next. Please, I would very much appreciate some advice!

My family tree:
http://trees.ancestry.com/tree/46855369/family