3 x 7 format 45 x 107 format 6 x 13 format 7 x 13 format 8 & 9 8.5 x 17 format 9 x 14 format Alternascope Altostereoskop American Corte-Scope Company American Novelty Company Apédioscope Apéscope Art Nouveau Astra Auto-Stéréoscope Autochrome Automatic-inverseur Awuco-Betrachter Bayerischen Stereobildwerke Bellieni, Henri Benescope Bergoscope Betrachtungs Apparat Bing Werke Binocular-style stereoscope Bize, Lucien Bloc-Omnium Block, Adolphe Box pattern stereoscope Box-type stereoscope Boxed stereoviews Brown, Theodore Busch, Emil