Timeline: A recent history of gay marriage in Colorado

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(AP Photo/Brennan Linsley)
<p>Clela Rorex, who served as Boulder County Clerk & Recorder in the 1970s, stands outside the c<span style="line-height: 1.66667em;">lerk&#039;s </span><span style="line-height: 1.66667em;">offices in Boulder on July 2, 2014. In 1975, Rorex stumbled into history when two men asked her for a marriage license, which she granted. She issued a total of six licenses before Attorney General J.D. MacFarlane intervened.</span></p>

A legal battle over gay marriage in Colorado could reach a head soon. A judge will hear arguments Wednesday from the state's attorney general, who wants the Boulder County clerk to stop issuing marriage licenses to same-sex couples.