In an article related to the state of Texas refusing to amend a death certificate to reflect same-sex partners as married, mysanantonio.com has a brief photo slide show which includes some of the other early cases for marriage equality.

(Photo By Minnesota Historical Society )
Applying for a license – May 18, 1970
In the wake of the Stonewall Inn raid in 1969, two gay activists in Minneapolis attempted to file for a marriage license in Minnesota. Richard Nelson (right) and James McConnell requests were denied. Their case went all the way to the U.S. Supreme Court, which refused to hear the case. The decision essentially quashed the marriage equality movement for the next two decades, until a court in Hawaii briefly upheld the right for same-sex couples to marry in 1993.
Reblogged this on Fairy JerBear's Queer World News, Views & More From The City Different – Santa Fe, NM and commented:
It’s still Thursday in my time zone, so here’s today in LGBTQ history…