Van Morrison
NBC Studios
Burbank, CA
Midnight Special
Recorded on 03/28/77
Broadcasted on 4/22/77

Moondance
Joyous Sound
Heavy Connection
Misty (with George Benson
Bring It On Home

This comes with no text file, just art.  That indicates it is from The Midnight Special television series.

Alternate sources also don’t have any real source info, but does come with extra tracks from London 1977 and San Francisco in 1975.