Lucy gave Mr. Tumnus her handkerchief to keep.

Lucy gives Mr. Tumnus her handkerchief as a token of her friendship and gratitude before leaving him.

Mr. Tumnus appears in "The Lion, the Witch and the Wardrobe" by C.S. Lewis, which is part of "The Chronicles of Narnia" series.

Mr. Tumnus plays the flute in C.S. Lewis's "The Chronicles of Narnia" series.

Mr. Beaver believed that Mr. Tumnus was arrested by the White Witch for helping Lucy and was likely turned into stone.