Hans P and Laura Langum Holthe

They and their 4 young children emigrated to Minnesota from Drammen, Norway probably via Quebec and Chicago. We are looking for any information on their passage and travel dates. We think they left around 1882-1883. Shortly after arriving their names were altered from Holthe to Holt. Their youngest child, a baby, died at age 2 1/2 we think in the US. His name was probably Christ, but know nothing else about him. Thanks! S Howell