Google Books Ngram Viewer

Graph these comma-separated phrases:
case-insensitive
between and from the corpus with smoothing of .  
Search in Google Books:

1800 - 1824 1825 - 1955 1956 - 1971 1972 - 1985 1986 - 2000 library English
1800 - 1822 1823 - 1922 1923 - 1938 1939 - 1976 1977 - 2000 books English

Run your own experiment! Raw data is available for download here.
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