A fact from Richard Bentley (publisher) appeared on Wikipedia's Main Page in the Did you know column on 12 February 2010 (check views). The text of the entry was as follows:
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Near the end of this section it says Bentley lost his copyrights to American works, but if you click on the Robert Harrison reference you can read it was 1859. I read a paper source in the library today which also has 1859 as the date. The correction forced me to make a follow-up change, admittedly unsourced, in the next year mentioned, since the reversal of this ruling must be dated later than the ruling itself. So I assumed that 1851 must be 1861.MackyBeth (talk) 15:19, 29 August 2014 (UTC)[reply]
After checking I found out that there actually was a case in 1849, which changed the certainty of copyright for foreigners publishing in Britain. So my previous edit is made undone.MackyBeth (talk) 07:31, 31 August 2014 (UTC)[reply]