The Spelljammer vessel lends its name to the AD&D campaign setting. Back in the original Spelljammer: Adventures in Space (1989) set, we got a poster map and a brief profile of the mysterious giant. It was akin to a Flying Dutchman, elusive and resistant to the laws of space and time.
Two years later, TSR gave THE Spelljammer its own box set.
The Legend of Spelljammer [BOX SET]
1991 … Jeff Grubb … TSR 1065 … ISBN 1560760834
Contents: 3 booklets, 2 maps, cardstock sheets
DriveThruRPG (PDF is $10)
The books have close-ups of the lid art by Jeff Easley.