The Museum of Letters is a Berlin institution dedicated to collecting and preserving letters. Some of them are vintage advert letterings, other letters belonged to old train stations that were renamed after the Berlin wall fell and thus became obsolete.
They were in the middle of renovating when i was visiting, so signs were being carried around and rows of letters were stacked against the walls. I really liked how the letters looked in piles and stacks, like a threedimensional collage- very nice for drawing.