- Esperanto-English English-Esperanto Dictionary & Phrasebook by Joseph F. Conroy, 1999-03
- Comprehensive English-Esperanto Dictionary by Peter J. Benson, 1995-03
- Practical Grammar of the International Language (Esperanto) by Unknown, 1938-01-01
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- Esperanto Language: Esperanto Grammar, Esperanto Orthography, Esperanto Vocabulary, Esperanto Phonology, Esperanto Etymology
- A Primer of Esperanto the Auxiliary Language by J C O"Connor, 1905
- International Auxiliary Languages: Esperanto, Basic English, Ido, Volapük, Interlingua, Novial, Lincos, Occidental Language, Toki Pona, Glosa
- PRACTICAL GRAMMAR OF THE INTERNATIONAL LANGUAGE (ESPERANTO). by Ivy Kellerman. Reed, 1945
- Esperanto-Language Films (Study Guide): Incubus, Gattaca, Blade: Trinity, Esperanto Film, Angoroj
- Esperanto, Interlinguistics, and Planned Language.(Review): An article from: The Modern Language Review by Chris Gledhill, 2000-10-01
- Practical Grammar Of The International Language: Esperanto (1915) by Ivy Kellerman Reed, 2009-06-13
- Esperanto-Language Singers: Kim J. Henriksen, Freundeskreis, Persone, Dolchamar, Kajto
- International Auxiliary Language: Language, Second language, First language, French language, Constructed language, Esperanto, Ido, Interlingua, International English
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