Fm Lier, Norway to Leer, Alpena Co., Michigan

I am very new to Norwegian genealogy. It is my mom's line. I have been doing German genealogy, my father's line for about 12 years, so I know German script, but do not know any Norwegian My ancestors from Norway were among the 5 Norwegian families to settle in Leer, Alpena Co, and Alpena, Alpena Co., Michigan in the late 1860's. I found this forum by searching the internet for Lier to Leer. On this site I found this answer: You do not give many clues, but by searching the Digitalarkivet for emigrants out of Kristiania, I find 41 persons from Lier going to Michigan, mainly Port Huron and Alpena, where such info is given. Børge Solem I belive my ancestors are among these 41. I don't read Norwegian, and cannot figure out this Digitallarkivet site. Can someone help me with these 41 people. Names I am looking for from Lier are Ottersen, and Olesen and Olsen. I can provide farm names if needed. Thanking you in advance. Karen JENTER Michigan