What was the name of the restaurant located in the 300 Building on 5th Avenue North, about the 3rd Floor. It was fairly fancy and may have begun with the letter C.?

Chatterbox?

Chatterbox is still located on 4th Street South at 22nd Avenue. This place was inside the almost neww 300 building off 34th Street and 5th Ave North. It was on an upper floor and was also a banquet hall. Something like Coronation Room. A credit group I belonged to at the time had their monthly dinners there.