The Wizard of Oz. Traditional Geocache

This is a puzzle of word and visual clues.  The coordinates will take you within a few yards of the actual container.  Ask yourself this, "what is the way to Emerald City?"

The Wizard of Oz is a 1939 American musical fantasy film produced by Metro-Goldwyn-Mayer, and the most well-known and commercial adaptation based on the 1900 novel The Wonderful Wizard of Oz by L. Frank Baum.^[2] The film stars Judy Garland; Terry the dog, billed as Toto; Ray Bolger, Jack Haley, Bert Lahr, Frank Morgan, Billie Burke,Margaret Hamilton, with Charley Grapewin and Clara Blandick, and the Singer Midgets as the Munchkins, with Pat Walshe as leader of the flying monkeys.^[3] Notable for its use of Technicolor, fantasy storytelling, musical score and unusual characters, over the years it has become one of the best known of all films and part of American popular culture. It also featured what may be the most elaborate use of character make-ups and special effects in a film up to that time.