With the painters Théodore Baron, Louis Artan, Edmond Lambrichs, F. Foudin, on 1 March 1868, he became one of the founders of La Société Libre des Beaux-Arts.
On 11 February 1873, after 10 years of publication, the Review underwent a transformation, expanding under the title "L'Art Universel"; Camille Lemonnier became the director.
"Hout" the published an article "A propos des peintres du rire" (Frans Hals, Jordeans, Jan Steen, the triad of painters of good spirits).
He also found himself in the company of Félicien Rops, Charles Hermans, Constantin Meunier, Jules Raeymaeckers, among the attendees of the "Atelier Libre Saint-Luc" in Brussels from 1853 to 1863, then directed by Slingeneyer – an association of young painters gathered to work together.
At an 1860 show, Dubois showed the great work "Les Cigognes" (The Storks), (shown at Spa that same year) painted in 1858, "La Roulette" (both of which today hang in the Royal Museum of Fine Arts in Brussels) and a study called "Enfant de choeur" (Choir Child) (this remained in his family and is now on display in Maui, Hawaii in the home of his great great granddaughter Maureen Vernon Breen); in 1863 "Solitude" (formerly "Le Chevreuil mort [dead Deer]) (also now on display in the Royal Museum in Brussels) shows the dead animal outstretched in the middle of a silent forest.
Dubois considered as his friends: Courbet, Louis Artan, Félicien Rops, Constantin Meunier, Alfred Verwee, Joseph Coosemans.
Twenty-one of Dubois' paintings and those of his students were displayed at the 1880 Brussels Artistic and Literary Circle; and in 1891 at the Arts and Press Expo.