Jacob, Gustave Jahnholtz Jugendstil Jumelle Lux Juwel Kalloscop Kalloscope (Richard) Keystone View Company Kilburn brothers Kolibri Kromskop Le Deley, Ernest Lechner & Müller Lechner & Müller pedestal stereoscope Legendre, Louis Leroy, Lucien Lissigret Listograph Lohire Lorgnette Lothian stereoscope Louis XVI style LZ 126 Mackenstein Magazin-Stereobetrachter Magic Photo Album Educator Mattey Melainotype Mendel, Charles Merveilleux Métamagasin Métascope