Continuity mistake: As the Cowardly Lion chases him, Toto runs off the Yellow Brick road into the bushes twice. (00:50:15)
Suggested correction: He only runs into the bushes one time.
Continuity mistake: When Dorothy slaps Lion on the nose for chasing Toto and shouts, "Shame on you!" in the wide shot, we see Dorothy's right arm with no mark on her skin. It then cuts to the medium shots, and there's an inexplicable long, thin blue mark (it's not a loose thread) on Dorothy's arm near her elbow, while she's holding Toto. This blue mark vanishes in the wide shot when she puts Toto down, and Lion begins to sing. (00:50:25)
Continuity mistake: After they meet the Cowardly Lion, the Wicked Witch watches them in her crystal ball. They pass the same rock again that was next to them when they started to sing, "We're off to see the Wizard" and dance down the yellow brick road. (00:53:25)
Continuity mistake: When they emerge from the woods before looking at the Emerald City, Toto runs up and stands on a rock with no tree anywhere near it. In the next shot from behind, a tree appears next to the rock. (00:54:35)
Continuity mistake: When the group emerges from the woods and is looking at the Emerald City, from the front Toto is about ten or fifteen feet to the left, standing on a rock. It then cuts to Dorothy for just a second, and then to a shot of the group from the back, and Toto is suddenly right behind them. (00:54:35)
Continuity mistake: When they first see the Emerald City Dorothy is holding the basket on her left arm. In the next shot it's in front of her in both hands. (00:54:40)
Continuity mistake: Dorothy raises her right arm and points at the horizon and cries, "There's Emerald City!", then lowers her arm. A shot later from the angle shot from behind, it's raised again and she's repeating all previous movements. (00:54:41)
Continuity mistake: In the poppy field Dorothy falls down with the basket at her side. No one touches it but in the close-up it's by her head. (00:55:45)
Continuity mistake: In the poppy field when he starts to cry the tin man has a dark oily tear coming down his left eye that disappears in the next shot. (00:55:45)
Continuity mistake: As the Scarecrow yells for "help" in the poppy field, the Tin Man goes from holding the head of his axe to holding his head between shots. (00:56:15)
Continuity mistake: In the scene where Dorothy and the Lion are asleep in the poppy field as the snow is falling, there is at least one if not two close-up shots of Dorothy's face showing no snow falling around her at all. (00:56:35)
Continuity mistake: After she wakes up in the poppy field, Dorothy oils Tin Man's left arm which is stuck to his head. In the next shot his arm is lowered. (00:57:00)
Continuity mistake: As the Wicked Witch watches them in her crystal ball Dorothy is holding a hanky in her hand and the oil can is held by the Scarecrow. In the previous shot the oil can is in her hand. (00:57:00)
Continuity mistake: As they all leave the poppy field the artificial snow has been neatly swept off the Yellow Brick road, and all traces of the snow on the ground are gone in the next shot. (00:57:30)
Continuity mistake: As they dance out of the poppy field, the snow that is on them disappears between shots. (00:57:35)
Continuity mistake: As they all leave the poppy field the bricks on the Yellow Brick road run left to right. In the next shot the bricks are at a 90-degree angle, now running lengthwise. (00:57:35)
Continuity mistake: The yellow brick road is made out of painted bricks. As they enter Oz it changes into shiny linoleum with grey grout marks painted on it. (00:59:25)
Continuity mistake: As they walk up to OZ, there are yellow flowers on the wall to their left. As the walk in we see the same spot behind them and the flowers are gone. (01:00:00)
Continuity mistake: After they enter Oz the collar and scarf of the driver of the horse drawn carriage change between shots without being touched. (01:00:05)
Continuity mistake: The flower pot crown that falls from the Cowardly Lion's head goes from being behind the gang to by the right of them, with no-one touching it. (01:04:38 - 01:05:50)