From December 25, 1910
JAMES LANE ALLEN ON “THE FUTURE CHRISTMAS”: Author of “The Bride of the Mistletoe” Traces Festival to Remote Pagan Past and Pictures Its Development Through the Ages. (PDF)
Although the headline suggests the article is all about the future, in fact novelist James Lane Allen gives a detailed history of Christmas. He focuses on the symbols we associate with the holiday — the tree, Santa, etc — and explains their Pagan origins. He then speculates that in the future, Christmas will again be celebrated as a ritual worshiping nature. He doesn’t say exactly when this will happen, so there’s still time for his prediction to come true.
James Lane Allen wrote a story that uses on the Pagan roots of Christmas as a theme. It’s called The Bride of the Mistletoe and can be read free here at Project Gutenberg