Heinrich Gottfried Ollendorff

• A New Method Of Learning To Read, Write And Speak A Language In Six Months
• Key to the Exercise in Vingut's Ollendorff's Spanish Grammar
• New Method Of Learning To Read, Write, And Speak, The Spanish Language
• Key to the Exercises in the New Method of Learning to Read, Write & Speak a Language in Six Months, Adapted to the Italian
• New Method of Learning to Read, Write, and Speak the French Language