1. Mary H. Collins to Mary Baker Eddy, 4 September 1888, IC 485.
  2. Collins to Calvin Frye, 8 October 1888, IC 977.
  3. Ebenezer J. Foster Eddy to Ira O. Knapp, 27 October 1890, L15798.
  4. SF – Eddy, Mary Baker – Pictorial Works – Luella A. Varney Serrao – General.