Presbyterian 101: A General Guide to the Facts About the PCUSA can be found here.

The Presbyterian Church (USA) has approximately 2.4 million members, 11,100 congregations and 14,000 ordained and active ministers. Presbyterians trace their history to the 16th century and the Protestant Reformation." -- —from site's Who We Are

"The Synod of Lincoln Trails is a governing body of the Presbyterian Church (U.S.A.) providing resources, staff services, information and training to the Presbyteries and congregations of Indiana and Illinois." --from site's About Us

"The Presbytery of Great Rivers is a regional governing body of the Presbyterian Church (U.S.A.) and is made up of 110 Presbyterian churches . . . all within the state of Illinois." — from site's home page

"The Covenant Network of Presbyterians is a broad-based, national group of clergy and lay leaders working for a church that is simultaneously faithful, just, and whole . . . "  —from the site's home page