The Lerouge Case:
https://www.gutenberg.org/ebooks/3802
The Mystery Of Orcivial:
https://www.gutenberg.org/ebooks/1651
File No. 113:
https://www.gutenberg.org/ebooks/3803
The Slaves Of Paris:
https://archive.org/details/171043761.2529.emory.edu
OR
https://archive.org/details/slavesofparis00gabo
The Little Old Man Of Batingnolles,And Other Stories:
https://archive.org/details/14201641.2531.emory.edu
About The Author:-
Émile Gaboriau(9 November,1832 to 28 September,1873)was a French writer,novelist, journalist,and a pioneer of detective fiction.
L'Affaire Lerouge,which was Gaboriau's first detective novel,introduced an amateur detective.It also introduced a young police officer named Monsieur Lecoq, who was the hero in three of Gaboriau's later detective novels.The character of Lecoq was based on a real-life thief turned police officer,Eugène François Vidocq(1775–1857),whose own memoirs,Les Vrais Mémoires de Vidocq,mixed fiction and fact.It may also have been influenced by the villainous Monsieur Lecoq,one of the main protagonists of Féval's Les Habits Noirs book series.
The book was published in Le Siècle and at once made his reputation.Gaboriau gained a huge following,but when Arthur Conan Doyle created Sherlock Holmes,Monsieur Lecoq's international fame declined.The story was produced on the stage in 1872.A long series of novels dealing with the annals of the police court followed,and proved very popular.Gaboriau sadly died in Paris of pulmonary apoplexy.
Link To The Author's Wikipedia Page:-
https://en.m.wikipedia.org/wiki/%C3%89mile_Gaboriau
Further Information About The Author Can Be Gained Here:-
https://www.britannica.com/biography/Emile-Gaboriau