https://imslp.org/wiki/Symphony_No.1,_Op.68_%28Brahms,_Johannes%29
Symphony No.1, Op.68 (Brahms, Johannes) - IMSLP
symphony no 1op 68brahms johannesimslp
https://imslp.org/wiki/Falstaff,_Op.68_(Elgar,_Edward)
Falstaff, Op.68 (Elgar, Edward) - IMSLP
op 68elgar edwardfalstaffimslp
https://www.themorgan.org/music/manuscript/114285/4
Brahms, Johannes | Symphonies, no. 1, op. 68, C minor. Selections | 004. Mvt. 2, p. [2] | The...
Brahms, Johannes, Symphonies, no. 1, op. 68, C minor. Selections , Symphony no. 1 in C minor, op. 68 : autograph manuscript, 1876 Sept. , , Cary 27