Have been trawling through past posts and realised that there are a lot of poster greats yet to be featured, I am starting with Herbert Matter
Herbert Matter. Herbert Matter was a celebrated American based graphic designer and photographer of Swiss origin. … Bornon April 25, 1907, Herbert Matter grew up in Engelberg, Switzerland. From 1925 until 1927 he attended École des Beaux-Arts in Geneva where he studied painting.
For a more detailed bio and all things Matter visit his official site