The Jewish Historical Society of the Upper Midwest focuses on the history of Jews in Minnesota, the Dakotas, Northern Wisconsin and Michigan’s Upper Peninsula. It is based in Minneapolis. Julie Tarshish is communications manager.

The Jewish Historical Society of Southern California chronicles the history and experience of Jewish life in and around Los Angeles and San Diego.

The Jewish Historical Society of South Carolina is in Charleston.

The Jewish Historical Society of Michigan is in West Bloomfield. Gerald S. Cook is president.

The Jewish Historical Society of Greater Washington is in Washington, D.C. Laura Cohen Apelbaum is executive director.

The Jewish Historical Society of Delaware in Wilmington chronicles the lives of that state’s Jews.

The Jacob Rader Marcus Center of the American Jewish Archives is the repository for more than 10 million pages documenting American Jewish history. The Cincinnati campus of Hebrew Union College-Jewish Institute of Religion houses the collection. Gary P. Zola is executive director.

The American Jewish Historical Society is in the Center for Jewish History in New York City. It is a collection of American Jewish holdings from the 16th century to the present. Paul B. Warhit is president. Contact Nicole Straus.

Wikipedia keeps its page on same-sex marriage updated with background, links, state-by-state information and charts. Wikipedia also has a page about Christian churches around the world that have approved same-sex marriages. As with any open-source website, information on Wikipedia should be confirmed before it’s used.