In Sweden, Christmas comes a night early, celebrated on Julafton (Christmas Eve), with many old traditions.
My personal theory is that Sweden is closer to the North Pole, so it's time-economical for Santa to stop by early. And in fact, he does come in person. A little rat-tat-tat on the door and a jolly voice asks, "Are there any nice children here?"
That Santa, Tomten, comes directly from the American concept of Santa Claus. But there are also tomtar, little gnomes/ mini Santas that visit on Christmas.
Come in, the stacks are open.
Away from prying eyes, damaging light, and pilfering hands, the most special collections are kept in closed stacks. You need an appointment to view the objects, letters, and books that open a door to the past.