Felix, Antonia (1999). Christmas in America (på engelsk). Courage Books. ISBN9780762405947. Henta 27. januar 2017. «German families brought a small tree into the home at Christmas time as a symbol of the Christ child, and decorated the boughs with cutout paper flowers, bright foil, apples, sweets, and other fancy treats. Another feature of Christmas that took a uniquely American turn in the nineteenth century is the tradition of Christmas lights. Candles were traditionally placed on the Christmas tree to symbolize Jesus as the light of the world.»
