Google Books Ngram Viewer

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

1800 - 1847 1848 - 1916 1917 - 1925 1926 - 1975 1976 - 2008 seeing visions English
1800 - 1882 1883 - 1989 1990 - 1996 1997 - 2002 2003 - 2008 having visions English

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