Yes, Virginia, there is a Librarian

In searching recently for some fun holidy fare to watch on our Netflix Roku, we discovered a Christmas short we had not seen before. Yes, Virginia  is a animated re-telling of the story of eight-year old Virginia O'Hanlon, who, in 1897, wrote to the editor of the New York Sun to ask if Santa Claus was real. This is a sweet family film, which had a special bonus of a scene in which Virginia and her friend go to the library to ask for help researching Santa. They get assistance from a rather traditional looking, yet enthusiastic, librarian who helps them find information on Santas of many lands. In the pictured scene, the librarian is actually shushing herself when she gets too carried away with the research.

See Virginia's originial letter, and editor's response, in this post from Newseum