I am writing in answer to your question about the Smedsrud name. I too am trying to find out more information on a Karl Anton Larsen Smedsrud that immigrated to US on September 25, 1903. This is the husband of Jorgine Torgersdatr, who immigrated on June 2, 1904.
Jorgine was a sister to my husband's grandfather, but I am not sure whether they ever comunicated after they got here.
The grandfather's name was Thorvald Erickson (Eriksen) he was born in Buskerud, Norway which is close to the Oppland.
I am communicating with a relative in Norway, but we are at loose ends now as we cannot find a ship record or a naturalization record. Any email@example.com