Happy Christmas Eve, Manfred.
After getting replies from chasers, I still can’t explain how these QSOs were created, though I’m now convinced they do not belong to any other activator either.
Please remove these 83 contacts at KFF-0664 (only) on 1/17/2016. [Note that I have other legitimate contacts on that date from 4 other parks.] No hurry at all!
— Pete K0BAK