- Author: Henry De Graffigny Author Record # 127719
- Legal Name: Marquis, Raoul Henri Clément Auguste Antoine
- Birthplace: Graffigny-Chemin, Haute-Marne, France
- Birthdate: 28 September 1863
- Deathdate: 3 July 1934
- Language: French
- Webpages: sf-encyclopedia.com, Wikipedia-FR
- Used These Alternate Names: H. Graffigny, Henri de Graffigny
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Novels
- Aventures extraordinaires d'un savant russe (1896) with Georges Le Faure
- De la terre aux étoiles, voyage dans l'infini (1882)
- De la terre aux étoiles, voyage dans l'infini (1882) with H. Graffigny
- The Extraordinary Adventures of a Russian Scientist Across the Solar System, Volume 1 [English] (2009) with Henri de Graffigny and Georges Le Faure
- The Extraordinary Adventures of a Russian Scientist Across the Solar System, Volume 2 [English] (2009) with Henri de Graffigny and Georges Le Faure
- Dalla Terra alle stelle [Italian] (1962)