@inbook{Ingersoll1892essaychristmas,
  author    = {Ingersoll, Robert G.},
  title     = {An Essay on Christmas},
  booktitle = {The Works of Robert G. Ingersoll, Dresden Edition},
  publisher = {C. P. Farrell},
  address   = {New York},
  volume    = {11},
  year      = {1892},
  url       = {https://thegreatagnostic.com/works/an-essay-on-christmas/},
  note      = {Public domain. Dresden Edition identifier: dresden:vol-11:an-essay-on-christmas}
}