Oz!

This one sounds like a total urban legend, but Snopes says it’s true. The costume designers were looking for a very fancy coat for Professor Marvel – the Wizard’s Kansas counterpart – but one that had gotten quite shabby. Some of the crew went to a secondhand shop and bought a bunch of coats to go through; Frank Morgan (the actor who played the Wizard), the director and the wardrobe people selected one out of the bunch that seemed perfect. It had a velvet collar but the nap was worn off of the velvet and it was looking a little worse for the wear. It even fit Morgan just right. Morgan was wearing the coat one afternoon and discovered a label that said “L. Frank Baum.” The coat had originally been made for Baum in Chicago – the tailor verified it, and Baum’s widow did as well. She was given the coat after the movie wrapped.

This is just about the best post I've ever read on The Wizard of Oz. Go here to read more truly interesting trivia about the classic movie. Thanks to Stacy at Neatorama.