Verheyden was a founding member of the anti-academic Société Libre des Beaux-Arts in 1868, and a member of Les XX from 1884 to 1886.
Isidore of Seville | Isidore | Isidore Isou | Isidore Singer | St. Isidore | Isidore the Laborer | Charles Mathieu Isidore Decaen | Isidore of Charax | Isidore Newman School | Isidore Geoffroy Saint-Hilaire | Isidore Charles Nollet | Reg Isidore | Philippe-Isidore Picot de Lapeyrouse | Louis Isidore Duperrey | Jean Armand Isidore Pancher | Isidore Pils | Isidore of Seville | Isidore of Miletus | Isidore Goresky | Isidore Gordon Ascher | Isidore Epstein | Isidore-Édouard-Candide Masson |