OJ 13/25, [1] Handwritten letter from Albert Trentini (on behalf of Hermann Rinn) to Schenker, dated February 23, 1927

Trentini invites Schenker to contribute to Der Kunstwart.

OJ 13/25, [2] Typewritten letter from Rinn to Schenker, dated April 6, 1927

Having received a letter from Schenker to Albert Trentini, Rinn welcomes the prospect of Schenker contributing the occasional article to Der Kunstwart, and asks for a title.

Diary entry by Schenker for 26 February 1927

Diary entry by Schenker for 9 October 1928