[ad_1] One day in 1796, a 25-year-old Bavarian playwright named Aloys Senefelder was in his workshop polishing a limestone plate when his mother burst into the room. She urged him…
[ad_1] One day in 1796, a 25-year-old Bavarian playwright named Aloys Senefelder was in his workshop polishing a limestone plate when his mother burst into the room. She urged him…