Below: Zeiss Ikon Cameras, Projektions- u. Kino-Apparate, Contessa - Ernemann - Goerz - Ica, around 1929, advertising card. Printed postcard, 14 x 9 cm

Unidentified photographer, around 1900, self-portrait in mirror (detail)

Albumen print, 24 x 19.5 cm

Unidentified Austrian amateur photographer, 1910s, Gelatin silver print, 13.8 x 8.8 cm

Advertisement in Deutscher Camera-Almanach, vol. 9, Berlin 1914