Apostrophe AFTER the "s" when the "s" is part of the plural.

Apparently I'm still on my crusade about apostrophes and plurals and possessives. This afternoon I opened an online survey form from Timberline Golf Course--one I needed to fill out in order to get a free round of golf, which sounded like a good idea to me. The survey gave a checklist of events at the course and asked that I check the ones I'd be interested in. One of them was worded this way:



Ladie's Clinics



If "lady" is made plural by changing the "y" to "i" and adding "es," the apostrophe should come AFTER the "s" to show possession by a plural noun.



After reading this, I began wondering who Ladie was and if she offered golf clinics. The choice should have read:



Ladies' Clinics



Happy apostrophe placement and happy golf!