American Novelty Company American Stereoscopic Company Anthony, E. & H.T. Appleton & Company, D. Beckers patents Beckers, Alexander Boxed stereoviews Brady, Mathew B. Combination Stereoscope Corte-Scope Corte-Scope Company Cremer patent Curved stereoview Grand Parlor Stereoscope Holmes, Oliver Wendell Sr. Hyalotype Kilburn brothers Kromskop Lee, James Lewis family Lewis, Henry J. patent Lewis, William H. combined stereoscope Lewis, William H. patent graphoscope Loyd patent Loyd’s American Stereoscope Mascher Stereoscopic Book Mascher viewing case