Key to Dr. Emil Otto's Materials for Translating English into German

French conversation-grammar

Elementary Grammar of the German Language Combined with Exercises, Readings and Conversations

Key to the French Conversation-Grammar

German conversation grammar

Introductory German Lessons

Materials for Translating English Into German

Key to the German Conversation-Grammar

Materials for Translating English into French

Exercises for Translating English into German

Materials for Translating English into German, with Grammatical Notes and a Vocabulary