By Various. Edited by Friedlaender. For medium voice, piano. 60 Songs by famous and less-known composers, also folk songs, selected for their value in vocal teaching and arranged in progressive order (Text Language: German). Published by C.F. Peters.

By Felix Mendelssohn. Edited by Friedlander. For medium voice, piano. (Ger). Published by C.F. Peters.

Medium Voice. By Various. Vocal Collection. Size 9x12 inches. 116 pages. Published by G. Schirmer, Inc.