+ AA6YQ comments below
.... comprehensive explanation of spelling changes was provided by Dave AA6YQ.
Dave:
This helps me greatly in managing my supplemental statistics. Your efforts in writing and supporting DXLabs are far understated.
+ I haven't ever pursued the "Worked All USA Counties" award, but I know what would someone pursuing that award would face if he or she had to manually correct the variations in county names reported by callbooks. So I built a simple mechanism that made it easy to add corrections as they were reported. It's been a long while since logging a QSO with a U.S. station has resulted in DXKeeper reporting an invalid county name that it couldn't correct.
73,
Dave, AA6YQ