Do you have an on-line census subscription? I do, an I found both John and Frank. Did you also see Stephen in St. Paul? That is Frank's brother. Their mother is living with Stephen, the other brother, Michael, and 2 sisters. The mother had 5 children, all living at time of census. So John is not a sibling to them, but could obviously be a cousin.
Could you e-mail photos to me (tkmcfadden#yahoo.com, replace # with @)?