Genealogy / Need help finding husband's family farm in Lubanow/Lodz [2]

Hello,
We are new to this forum and need some help. My husband left Poland when he was three years old(1944) and grew up in Germany.He hasn't been back to Europe since that time, and we want to go back this year. His family had a large farm in Lubanów, and we would like to find the original place, but aren't sure where to begin. I would like to try to obtain information perhaps from his baptismal certificate. He was baptized as a Lutheran, and we aren't sure whether it was in Lubanów, Grabica or Lodz. He doesn't remember any Polish either. Any suggestions as to how we could get some information or where we could write would be very helpful. Thank you so much. Marie