I am planning a trip to the Cincinnati Historical Society. They have moved to new quarters in downtown Cincinnati. I know they have several boxes of Clopper papers and said I could see them - but - not until 2018! Apparently everything is packed away right now and they are not in a position to do much of anything except get organized. I am in Pittsburgh, PA and if you are not too far away, I would love to take a look. Otherwise, everything has to wait until 2018.