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<http://www.playbill.com/news/article/vintage-playbill-a-chorus-line-opening-night-1975-to-the-end-of-the-li1-325612>
<http://www.playbill.com/news/article/vintage-playbill-a-chorus-line-opening-night-1975-to-the-end-of-the-li1-325612>