The index is now on line. The best way to get t o the Historian's web site is to Google:
Yates County Genweb
The first result will be the search page, which you should bookmark. If you get there through the County's site you don't get a real window & don't have a back button.
Go through the search page because that also gives a list of records indexed and transcribed on the site, and instructions for getting copies. Anyway, a name entered in the search box will get results from the cemetery lists.
Yates County Historian