Letter from composer Henry Cowell to Frances Schillinger, starting that "I stand to do all I can for the [Schillinger] System, of course."

Letter (in German) from Arthur Friedheim to his wife, Madeleine; written while Friedheim was teaching in Toronto.

Letter (in German) from Arthur Friedheim to his wife, Madeleine; written while Friedheim was teaching in Toronto.

Letter from composer Henry Cowell to Frances Schillinger, letting her know that the journal Modern Music had "decided not to use the original article I wrote for them, on the basis that it was too biased in favor of ...

Letter (in German) from Arthur Friedheim to his wife, Madeleine; written while Friedheim was teaching in Toronto.

Letter from Russian scientist Léon Thérémin to Frances Schillinger (typed manuscript of original handwritten note) discussing both Joseph Schillinger and composer Henry Cowell.

Letter from composer Henry Cowell to Frances Schillinger, giving advice on publishing Joseph Schillinger's work.

Photograph of Madeleine Friedheim and son Eric taken in Munich (Germany). During this period (1914 - 1919), Madeleine and Eric were unable to join Arthur Friedheim in the United States because of their German surname.

Letter from composer Henry Cowell to Frances Schillinger, updating her on the progress of publishing Joseph Schillinger's work.

Letter from composer Henry Cowell to Frances Schillinger, hoping that they can discuss "the problem of where to place Joseph's own music" for publication.