Google Books Ngram Viewer

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

1800 - 1852 1853 - 1916 1917 - 1926 1927 - 1974 1975 - 2008 seeing visions English
1800 - 1875 1876 - 1987 1988 - 1993 1994 - 2001 2002 - 2008 having visions English

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