Language Log has posted for many years about singular they, often spotting examples of it in well-edited publications.<p><a href="http:&#x2F;&#x2F;languagelog.ldc.upenn.edu&#x2F;nll&#x2F;?cat=27" rel="nofollow">http:&#x2F;&#x2F;languagelog.ldc.upenn.edu&#x2F;nll&#x2F;?cat=27</a><p>See also the wikipedia page on singular they, chock full of usage examples:<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Singular_they" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Singular_they</a>