- Ahn's Complete Method of the German Language
- Ahn's Latin Vocabulary For Beginners, Methodical And Etymological: With A Collection Of Latin Proverbs And Quotations
- Ahn's Second German Book: Being the Second Division of Ahn's Rudiments of the German Language
- Rudiments of the German Language; Exercises in Pronouncing, Spelling, Translating, and German Script
- Key To Ahn's Rudiments Of The German Language