Most of the Scalfs in Indiana tie in together, but I haven't been able to get all the links in.
Descendents of Robert Enoch Scalf were in Ohio County, Indiana.Robert Enoch was the brother of my great-grandfather, William Avery Scalf.Their mother was Mary Elizabeth Denning.
I have the record of another Scalf/Denning link - a Clara Denning marrying Robert Scalf in Switzerland County, Indiana on 20 Jun 1880. But I haven't been able to link either of these two to the known Scalf and Denning lines, although I am sure the relation exists.
I would be interested in comparing notes and seeing what we come up with.