https://www.bbc.com/news/magazine-31658799
https://www.nydailynews.com/entertainment/theater-arts/sound-music-full-sweet-songs-1959-review-article-1.2429534
http://www.nytimes.com/packages/pdf/theater/88838013.pdf
http://www.reelviews.net/reelviews/sound-of-music-the