Online collection of Zamenhof's writings

• Originala Verkaro [Original collection of works], 1929
  These diverse documents were collected and sorted by Johannes Dietterle and published by Hirt & Sohn in Leipzig, 1929. Photocopies appeared in 1983 in Osaka at Oriental-Libro. At that time, the book was the largest collection of Zamenhof's texts, and for it remained the principal reference work about Zamenhof's editing and about Esperantology for decades.
• All of Zamenhof's works held in the Collection for Planned Languages of the Austrian National Library, Vienna
• The Holy Bible
• Zamenhof's Speeches
• Esenco kaj Estonteco de la Lingvo internacia [The Essence and Future of the International Language]
• Fundamento de Esperanto [Esperanto Fundamentals]
• Proverbaro Esperanta [Esperanto Proverbs]
• Dogmoj de Hilelismo [Dogmas of Holisticism]
• Homaranismo [Homaranismo (Humanitism)]