I believe that the young man in the article was Richard Kollmann, son of Bernard Norbert and Frances Kollmann of St Joseph, MN. He passed away on 1 August 2024. I do not know the specifics about the time he went missing.
I mentioned in post 164 of this thread an abduction/murder which took place in 1972 in Wisconsin that had some similarities to Dickies case. The perpetrator was identified through DNA in recent years and he was a Minnesota resident at the time.
There was also a case of abduction and murder of a 14 year old boy, Michael Fisher, in Superior, Wisconsin which occurred in June 1966, only 8 months after Dickie's disappearance.
LINKS:
The only background information I could access about this case is from the book linked below. There's probably more articles about Michael but I can't view them.
101 Wisconsin Unsolved Mysteries by Marv Balousek
#63 - Who killed Michael Fisher?
On the morning of June 19 1966, Michael Fisher prepared his wagon and set off to begin his paper route. He only delivered one paper though. Later that morning, his sister found the wagon with the undelivered papers and finished the deliveries herself. She was unsure on what had happened to him. Michael's body was found about...