- Dr. J.G. Flügel's praktische Anleitung zur Englischen handels-correspondenz
- Dr. J.G. Flugel's Practical Mercantile Correspondence; Or, English Commercial Letters: With German Notes
- Flügel's Complete Dictionary of the German and English Languages, Adapted by C. A. Feiling and A. Heimann. English and German
- Flügel's Complete Dictionary of the German and English Languages: Adapted to the English Student, With Great Additions and Improvements,
- Literarische Sympathien










