Revealing: If you listen closely, during the singing of "We're Off To See The Wizard" by Dorothy, the Scarecrow and the Tin Man, you can recognise Buddy Ebsen's gravelly voice. He was the original Tin Man, but had a reaction to the makeup. They had already recorded the songs and it was too expensive to re-do it. (This film was WAY over budget and they couldn't waste time and money re-recording songs)

Other: When entering the Haunted Forest, the Scarecrow is carrying a pistol and a stick, the Lion has a bug sprayer and net, the Tin Man has a monkey wrench and his axe. But different scenes after that shows some items missing and then returning. I guess in the insect scene that was cut, they lost all those things but the axe.

Continuity: After the Witch throws a fireball at the Scarecrow in the woods and disappears, Dorothy is holding Toto. But when it cuts to a closeup of her, it looks like her shoulders are extended. When it cuts back to the wide shot, she indeed has her arms around the Scarecrow and Tin Man, even though she never put Toto down.

Continuity: The blue shirted Lollipop Guilder comes from around the fallen house at the beginning of "Come Out Come Out," but he immediately appears emerging from a jet black manhole (with a black lip where the cover goes) in middle of the yellow brick in front of the house.

Visible crew/equipment: When Dorothy first meets the Scarecrow, he is placed up on a wooden stick and you can blatantly see the wire holding him up on it.

Continuity: 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.

Continuity: At the end when the Wizard and Dorothy are in the balloon basket, the tie down ropes on the right side keep going from tied to untied and back to tied again through different shots.

Continuity: The Wicked Witch leaves Dorothy and runs to grab the hourglass. The mortar and pestle on the left of the hourglass disappear between shots.

Plot hole: In the scene when the Wicked Witch of the West bends down to retrieve the ruby shoes from the feet of her sister sticking out underneath Dorothy's house, there is one quick shot in the middle of the scene that shows her in front of a screen with a picture (film) of the house on it. Maybe that shot was filmed after the original set was unavailable? That would seem to be the only possible and reasonable explanation why such a shot would be necessary.

Audio problem: When Dorothy, Scarecrow, and Tinman are in the forest where they find Lion, the first time Dorothy says "Lions and tigers and bears, oh my" her mouth doesn't move at first but when the camera cuts to the next shot her mouth finishes the phrase.

Visible crew/equipment: Studio lights are seen reflected in Dorothy's bedroom window as it rips off due to the twister.

Continuity: When trying to escape the Witch's castle, the big doors close, and the gang stand in a line and start banging on the doors. Between shots Dorothy and the Tin-man switch sides.

Continuity: When Dorothy is at the end of the movie confronting the Wizard about going home, since she killed the Witch, Toto goes over to the curtain and you can see him tied up to it as he opens it. Dorothy then goes over there and automatically has him in her arms - she didn't even need to bend down and pick Toto up.

Visible crew/equipment: As the Munchkins sing "Ding Dong The Witch is Dead" " the shadow of the cameraman and someone else can be seen on the nest of the green Munchkin eggs as they hatch into little pink Munchlets.

Continuity: After Dorothy pulls the Tin Man's arm down we see her throw the apple that she's holding down behind him. In the next shot it reappears in her left hand.

Audio problem: In the poppy field the tin man says "this is terrible" but his lips don't match up with what he's saying.

Continuity: After Dorothy falls into the pig sty Zeke holds his left hand over the right side of his chest. In the next shot his hand is over the left side of his chest.

Other: In the close-up as the Wicked Witch pets him, Toto, who has been referred to as a "he" throughout the movie appears to be a she. In actuality, Toto is a female Cairn terrier named Terry.

Continuity: Glinda says to Dorothy, "I'm afraid you've made a rather a bad enemy of the Wicked Witch of the West…" and the mayor of the Munchkin city walks up from behind them. In the next shot he re-approaches them from the left.

Continuity: When Dorothy is talking to the Scarecrow for the first time, the pole the Scarecrow is attached to changes in length between his close up shots.