Lyrics

Check your local library or college library - when the movies came out back then, sheet music of each song & complete scores were waiting at the local music stores. The score for a 50+ year old movie musical probably isn't going to be found at Amazon or the like. You might find it if you check Ebay frequently. Other than that, libraries are the best place to start. As I'm sure you know, finding the Broadway scores is a lot easier.

Try www.libretto.musicals.ru and see what they have. Sometimes they have listings of both movies and theatrical versions.

You can always sit down with a note pad and pencil, run the DVD of the movie, and repeatedly pause it while you note down each line of each song. It should take about four hours.