Ub Iwerks was an incredible animator. He could do an entire cartoon...about five minutes...in one day. That's just simply amazing by any time's standards. And considering the level of detail he put into his work, this is even more astounding.
His work stands up even by today's standards. And he is well remembered by the best animators of the world for his craftmanship and style.
Ubbe Eert Iwerks, March 24, 1901 – July 7, 1971) was a two-time Academy Award winningAmerican animator, cartoonist, character designer, inventor, and special effects technician, who co-created Oswald the Lucky Rabbit andMickey Mouse with Walt Disney.
He was born in Kansas City, Missouri. His father, Eert Ubbe Iwerks, emigrated to the U.S. in 1869 from the village of Uttum in East Frisia(northwest Germany, today part of the municipality of Krummhörn). Ub's birth name can be seen on early “Alice” shorts that he signed. Several years later he simplified his name to “Ub Iwerks”, sometimes written as "U. B. Iwerks". --- from Wikipedia