Possible Clues:

• Girl who went to Oz
• Last seen riding in a basket. If found, call ___ [see 106-Across]
• GOODLY HEART (debuted 1900)
• "Toto, I've a feeling we're not in Kansas anymore" character
• Character who, in an 8/15/1939 Hollywood premiere, speaks the first words of this puzzle's five other longest answers
• Character who, in a movie released nationally 70 years ago today, sang the ballad formed by the first words of 21-, 26- and 43-Across
• Character who asked this puzzle's question