1. Mary Baker Eddy, 26 December 1880, A10367, https://mbepapers.org/?load=A01367
  2. Mary Baker Eddy, 26 December 1880, A10085, https://mbepapers.org/?load=A10085
  3. Mary Baker Eddy, Science and Health with Key to the Scriptures (Boston: The Christian Science Board of Directors), 516.
  4. Science and Health was published in two volumes at this time.
  5. Mary Baker Eddy, 26 December 1880, A10367, https://mbepapers.org/?load=A01367