Performance of Schloss's Sonata for Piano by Jakob Gimpl. Content includes programs for the sonata concert and other concerts, commemorative folder, correspondence, and reviews.

Performance of Schloss's Sonata for Piano by Olga Novakovicz (piano). Content includes concert program.

Twenty-Three Pieces: For Children in Twelve-Tone Style; New York: Peer International Corporation, 1965. Composed 1958. Instrumentation: solo piano. 1 score (22 p.); 31 cm. Work sheets; 9 leaves. Photocopy of published first page "Follow The Leader"; 1 leaf. Complimentary copy of published score; 1 copy.

23 Studies for Piano (in twelve tone style): for children; copyright 1962 by Julius Schloss printed with Ozalid process. Composed 1958. Instrumentation: solo piano. 5 scores (20 p.); 32 cm. Work sheets; 21 leaves. Photocopy of published first page "Horns"; 1 leaf. Transparent masters of score; 20 leaves.

23rd Psalm: for Chorus and Organ; copyright 1971 by Julius Schloss printed with Ozalid process. Composed 1969-1970. Instrumentation: chorus (SATB) + organ. Text in Latin, English & German. 3 scores (24p.); 32 cm. Row sheets; 2 leaves. Copies of text in Latin, English & German; letter to Oxford University Press asking for rights; 8 leaves. Work sheets; one sheet dated 11.5.61; 4 leaves. Transparent master of title page with cut-out newsprint letters, 1 leaf. Manuscript in pencil; with annotations in pencil; dated 23.4.1969-11.6.1969; 8 leaves. Fair copy of chorus (SATB) and organ in pencil and red ink; dated 1969-1970 and 20.5.70; 25 p. Fair copy of chorus (SATB) in pencil; three versions for text in Latin, English & German dated "1969/70"; 12 p. Transparent masters of score; 24 leaves.

Performance of Schloss's Sonata for Piano by Pauline Lederer (piano). Content includes concert series flyer, concert program, correspondence and reviews.

Performance of Schloss's 1st String Quartet by the Grevesmühl-Quartett. Content includes festival program, concert program, festival flyer, issue of Signale für die Musikalische Welt (vol. 87, no. 26; 26.6.1929; photo and description of Schloss string quartet on pp. 798-799), correspondence, and reviews.