NBAA show was renamed in 1997 from the Corporation Aircraft Owners Association as it had always been known since its formation in 1947. Flight reported that the new name was said to reflect the safety, efficiency and acceptance of business aviation.
In 1947 it had 19 member companies, 50 years later it had 4,700, and according to the NBAA website it has in excess of 8,000 members.
Here are a few entries I found in the archive...
1971 - NBAA Convention guide
1978 - The Great St Louis Meeting
1988 - Breaking records
1993 - Making history
1997 - Dallas hosts No. 50
1999 - Millennium fever