Analysis of information sources in references of the Wikipedia article "全球最畅销专辑列表" in Chinese language version.
1 million copies were sold by 1958, 2.25 million by 1960, almost 3 million by 1963
first time that a complete score of a Broadway musical was put on wax, by 1945 sales were at half a million
...25 million copies sold worldwide by May 1, 1979
first time that a complete score of a Broadway musical was put on wax, by 1945 sales were at half a million
...25 million copies sold worldwide by May 1, 1979
