- FondsPP - Helen Martens fonds
- Series4 - Felix Mendelssohn research
- 6494 - Untitled
- 4 more...
- File5 - Research on Mendelssohn’s concerts
- File6 - Photocopy of transcribed letters between Mendelssohn and F. David
- File7 - Research on Mendelssohn’s tutor J.G. Droysen
- File8 - Research on Eduard Devrient’s memoir of Mendelssohn
- File9 - Photocopies of newspaper articles concerning Mendelssohn.
- File10 - Annotated research and notes on Mendelssohn
- File11 - Annotated research on Mendelssohn
- File12 - Annotated writings on Mendelssohn by B. Alexander
- File13 - Annotated research and notes on Mendelssohn’s ‘Melusine’ overture
- 44 more...