Софокл. Драмы. Т. 1 Памятники мировой литратуры. Античные писатели.  Перевод Ф. Зелинского. (Москва: изд. М.и С. Сабашниковых, 1914). The volume is inscribed   Э Малеръ 1914 on the cover page. With the old orthographic hard sign it is clear that Prof. Mahler acquired the book at that time as a student of  Classics. The publisher, the Sabashnikov brothers also connect the book to Margarita Voloshina-Sabashnikova. Their is a barely legible stamp on the back inside cover.  A postcard of Gempenfluh was also found in the text.