Thematic index numbers for works without opus numbers are from Richard Strauss, Thematisches Verzeichnis, v. 3, 1974, by E.H. Müller von Asow, e.g. Andantes, horn, piano, AV 86a, C major
His Feuersnot ... 1901
His Aus Italien [SR] c1972: container (Richard Strauss; Rikhard Straus)
His Orchestral excerpts from symphonic works, c1956: t.p. (Strauss) p. 3 (Richard Strauss)