A recent eBay discovery unearthed a VERY rare piece of Xanadu promotional material: a 1981 Xanadu calendar/poster; a one sheet that helps you keep track of the first 6 months of 1981. It was produced by Jet Records from Japan (i think).
Here are some pictures:
....and here's the close up of the Jet Records logo on the bottom right:
It can be bought for $102 plus $30 for shipping. You can find it HERE!
Good Luck,
Don-O