http://www.charleyproject.org/cases/s/sjoberg_catherine.html Catherine Sjoberg disappeared from her prom in the early morning hours of June 5, 1974. She has not been seen since. She supposedly went outside for some fresh air. The Prom was held at the Concord House in Concord WI. I wonder if anyone knows what her prom date said happened or if there are any friends of Cathys who have any idea what could have happened that night. The area is pretty desolate and I wonder how well it's ever been searched. There doesn't seem to be too much info out there on this case.