This bonus resource, primarily for English Language teachers, is an article published in The New Yorker on 23 February 2016. It discusses gender bias in dictionary example phrases, and the Twitter furor inadvertently started by a US anthropologist when he suggested the OED should update their example phrase for the term ‘rabid’.
http://www.newyorker.com/books/page-turner/should-dictionaries-do-more-to-confront-sexism