Christmas Songs That Don't Actually Mention Christmas

Frosty the Snowman
Jingle Bells
Let it Snow
Sleigh Bells
Winter Wonderland

I've always wondered about songs like these that have become de facto Christmas Songs even though they don't actually mention or reference Christmas. They're all about snow and winter. (The Frosty TV Special was very Christmas themed, but the song came first.)

I asked my Mother about this when I was young, and she replied, "I guess any song about winter has to be a Christmas song, because by the time Christmas is over, no one wants to hear about winter."

Can you think of any others?