- Profession: Hofrath, Hofrat in Vienna
- Relation to Mahler: Letter from Gustav Mahler
- Correspondence with Mahler: Yes
- Born: 00-00-0000
- Died: 00-00-0000
- Buried: 00-00-0000
“2/I 1904 / Fraülein Hofrath Sophie Bassermann / Gustav Mahler”
Comprising the opening horn-call theme, marked by Mahler for eight horns (“8 Hörner”), four bars written in black on a hand-drawn stave, notated at sounding pitch.
1 page, 11.3 x 18.8cm, laid down on an oblong octavo album leaf, signed on verso by Sir Georg Solti, [Vienna], 2 January 1904, some light browning.