Through DNA I have connected with a woman that looks to be a first or second cousin. Together we have narrowed it down to who appears to be the grandparents. It is a bigger mess in my line as I have an uncle that had four boys according to his youngest sister, two with one woman and two with another. We do know that the first two were put up for adoption and my uncle's oldest sister adopted one of the two, the second boy and both of the boys with other woman we don't know their whereabouts.
To my knowledge all of the adoptions on my side were done in Nebraska, the woman was adopted in 1968 in Minneapolis, through Lutheran Services.