1. William I. Gill to Mary Baker Eddy, 16 April 1886, 215.36.005.
  2. Gill to Eddy, 6 July 1886, 215.36.018.
  3. See “Philosophical Realism” on page 78 of the June 1886 issue of The Christian Science Journal and “Philosophical Realism” by Mary B. G. Eddy on page 211 of the December 1886 issue of the Journal.
  4. Gill to Eddy, 25 November 1886, 215.36.025.
  5. Eddy to Gill, 26 November 1886, L02555.
  6. Eddy to Gill, 27 November 1886, V00978.
  7. See for example Alfred Lang to Eddy, 2 December 1886, 294.42.009.
  8. Founded in 1865, the Religio-Philosophical Journal was published in Chicago until 1905.
  9. Melville C. Spaulding to Eddy, undated, 572.59.018.