From inside the binder on the first page:
The Traveller Adventure Titled Shadows was used as the Traveller Tournament situation at WinterWar 1980, held at the University of Illinois, Urbana-Champaign, January 18, 19 and 20, 1980
This is 3-hole punched in a Black "official" Traveller Binder.
These were sold at the GDW booth at Origins 1980 is is believed (I'm trying to follow up with Marc Miller on this). I know that at least 10 were sold and perhaps more.
This was eventually turned in one of the two adventures in Traveller: Double Adventure #1