Santa Brand-book has been uncovered in the files leaked by (now get this) Edward Snow-den (get it?). It's an awesome and interesting read. Read it in full HERE.
Ministry of Art & Jump has operated the "Ministry News Blog" since 2005 in it's present form. On that blog several references has been made to Christmas.
In the future this will be the place that collects all such ranting in one spot instead of risking to drown in the roar of the Ministry.
The Official Yule gallery: Go to Yulery