How was it done?

If a Norwegian family -- mother, father, two very young daughters (3 and 9 months) -- landed in New York in 1852, how did they get to Milwaukee on a boat? Any probable is welcome. I only just today found out that NYC was the point of debarkation from the Jorgen Brunchorst. on June 15, 1852. Somehow, before the year ended, they arrived in Milwaukee and made their way to Dane County, Wisconsin. The big gap in the story is between NYC and Milwaukee. Even a good guess would be appreciated. dakota ggfather, Jens Oleson Otternes