Unusual historical rarity from Vienna in the 1950s! Original wall charts on cultural history: development of dwellings, timekeeping, writing, economy, vehicles, shipping & aviation, as well as the history of books and theater! All pictures are signed with HDemmer. The development of time measurement, school wall picture for history lessons from the series "Cultural history in pictures". Shown from left to right: Menhir, Shadow clock (ancient Egyptian sundial), Sundial, Water meter, Hourglass, Wheel Clock, Tower clock, Spring clock (Nürnberger Eierlein), Pendulum clock, Electric clock, Automatic watch. After original illustrations by H. Demmer, with detailed explanations by historian Prof. Karl Scheidl. It got printed by F. Adametz in Vienna. Despite their age, the condition of the prints is as good as new, the drawings and illustrations are highly professional, the colors are beautiful and well preserved!