The first Christmas card was designed in 1843 by J.C. Horsley.
The first postage stamp to commemorate Christmas was issued in Austria in 1937.
'Klaxon' is a name that does not belong to one of Santa's reindeer. A klaxon is actually a powerful electric horn. Its name comes from a German word meaning "shriek".
The definition of a white Christmas in the UK is for a single snow flake (perhaps amongst a shower of mixed rain and snow) to be observed falling in the 24 hours of December 25th.
Robins on cards were a joke 150 years ago when postmen wore red tunics and were named after them.
Although now mostly vegetarian, in Victorian times, mince pies were made with beef and spices.