Google Books Ngram Viewer

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

1800 - 1917 1918 - 1927 1928 - 1933 1934 - 1993 1994 - 2000 conducting a lecture English
1800 - 1842 1843 - 1941 1942 - 1950 1951 - 1978 1979 - 2000 conducting a course English

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