Whitelief -
First of all, good luck on your pursuit. I finished the 111/115 several years ago now. But I don't know if your count of 110 was due to leaving out Slide and Hunter in the Catskills or leaving out the two recently promoted Maine mountains (Spaulding and Redington). Anyway, there are 115 required climbs for the 111ers (MacNaughton is not on the list) and here's the breakdown.
Adirondack 46Rs - (46) although only 42 of these top out above 4000, the 111ers have decided to recognize the tradition of the 46 and requires all.
Catskills - (2) Slide in Ulster County and Hunter in Greene County
White Mountains - (48) ... new list replaces Wildcat E with Wildcat D
Vermont (5) - Killington, Camel's Hump, Abraham, Ellen and Mansfield
Maine - (14) - the recent additions are in the Sugarloaf area.
The longtime head of the 111ers is Priscilla Robertson and her address for more information is ...
329 Village Street
Medway, MA 02053
Good luck.