May 4, 1945 –
The Merrie Melodies short, Hare Trigger, directed by Friz Freleng, starring Bugs Bunny and Yosemite Sam (in his first appearance,) debuted on this date.
This was the first Warner Bros. cartoon to feature full credits (for story, animation, layouts, backgrounds, effects animation, film editing, voice characterization, and music, followed by the director credit on a separate screen).
The Haus of Dcaligari 