File contains stereoscopic slides, the majority of which showcase military officials and their families. Some depict also show buildings, art and animals.

This glass lantern slide is representative of personas from Imperial Militaria Germany (1871-1918). It has four portraits of men, they have been identified as Pope Leo XIII (1878-1903), Frederick III (Emperor in 1888 for 99 days, successor to William I and predecessor of William II), Helmuth von Meltke the Elder (Chief of Staff of the Prussian Army from 1822-1888) and Otto von Bismarck (Chancellor from 1871-1890). In the portrait of Frederick III, he is wearing the Order of the Black Eagle, which means he was Emperor in this picture. Since Frederick III only ruled in 1888, and the other three were either still in power or just retiring, we have tentatively dated the piece for after 1888. This year refers to the Year of Three Emperors, because it was the year that William I died, the year Frederick III ruled and died, and that William II took over as Emperor. The images are in colour, potentially colour halftone process on a glass slide. Just one pane of glass, printed on verso.