A carte de visite is a stiff card of about 11.4 x 6.4 cm, with an attached paper photograph, invented in 1854 by André-Adolphe-Eugène Disderi. Cartes were usually portraits and were made by the millions worldwide. Multi-lens, or ‘multiplying’ cameras were introduced in the 1860s, which were capable of producing from 2 to 32 images in quick succession, dramatically increasing the number of cartes de visite that could be made from a single photographic plate. They were easily reproduced by making paper contact prints from the glass plates, which were then cut and pasted to card. They were often collated into albums.