The Museum of Photography in Charleroi contains approximately 3000 glass slides by both professional and amateur photographers. It consists of both partial and complete series by commercial producers like Le Riverend et Dochy, Maison de la Bonne Presse, Trade Mark, N. Laflotte, Mazo, Maison Ad. Braun & Cie. Braun, Lévy & Cie, Newton & Co, Geo Philip & Son and more local producers such as Maison Parmentier de Bruxelles.