Good place for a luncheon in NYC

Does anyone know a good place to through a Sunday luncheon in New York City? It’s for my mother’s 70th birthday. The guest list will be 20-50 people. (Yeah, we need to finalize the invitation list.)

How about Gage & Tollner – its in Brooklyn though. it’s been there since 1892 and is totally preserved from the 1800s in the Victorian style. I went there for my great-Aunt’s 80th birthday and she really dug it.

they have a website http://www.gageandtollner.com but I’ve been having some difficulty with it. some basic info is available at:

http://www.nylandmarks.org/locations/gageandtollner.html

Thanks for the suggestion. I should have been more specific. We’re looking for a place in Manhattan.