John Murray an Ernst Haeckel, Trier, 27 September 1893
Trier 27 Sept.
I am having a trip with my wife. We will reach Weimar about Monday next, and we purpose to go to Jena to see you on Tuesday returning Weimar the same evening. I have asked my letters and proofs to be sent to your care. Will send you another note from Gotha or Kassel: Yours