HISTORY: FR/SJ Timeline question

Thanks to everyone for trying to help me figure out where this sentence came from:

An illithid spelljammer is sighted in the Skyward Realms (Realmspace) by Netherese spelljammers. (c-1064 DR)  

After lots of advice and searching, it likely originates from the GenCon
Netheril Timeline Handout , which I don't have access to.  Since that's
a rare resource, and it jars with other sources, I won't be using it in
my timeline projects.
 
Thanks again!    
 
-- 
"He thinks being Dungeonmaster gives him a license to mess with our heads."
"Oh, I'm sorry. Perhaps I should let you encounter kittens and Grandmas
so as not to upset you." 'Discos and Dragons', _Freaks-n-Geeks_

Paul Westermeyer,  westermeyer@????????.net