Elizabeth and Mary Kirby
... that the popular science writers Elizabeth and Mary Kirby crowdsourced their first joint book in 1848?
... that the popular science writers <b id="mwAZw"><a href="./Elizabeth_and_Mary_Kirby" id="mwAZ0" rel="mw:WikiLink" title="Elizabeth and Mary Kirby">Elizabeth and Mary Kirby</a></b> <a href="./Crowdsourcing" id="mwAZ4" rel="mw:WikiLink" title="Crowdsourcing">crowdsourced</a> their first joint book in 1848?