The Orthodox Presbyterian Church 
Official Site. A conservative Presbyterian denomination with over two hundred churches in the United States. Site includes information on church beliefs, ministries, and local congregations.
http://www.opc.orgGreat Commissions Publications
Publishing ministry of the Orthodox Presbyterian Church and Presbyterian Church of America. Publishes Sunday School curriculum, Bible study material, and other literature.
http://www.gcp.org
Presbytery of Michigan and Ontario
Resource center for the Michigan and Ontario Presbytery.
http://www.all-of-grace.org/pres/
Presbytery of the Mid-Atlantic
Directory of churches and resource center for the Presbytery of the Mid-Atlantic
http://ourworld.cs.com/opcmidatlantic/
Orthodox Presbyterian Church: Ecumenical Relations
A study, by Reverend Richard E. Pot, of the OPC's ecumenical relations with Reformed churches, focusing especially on the Canadian Reformed Churches.
http://www.geocities.com/r_e_pot/papers/opc.html
Presbytery of the Southwest
Presbytery news, events, and leadership.
http://www.opcsouthwest.org/
Presbytery of the Mid West
Directory of churches and resource center for the Presbytery of the Midwest
http://www.pmwopc.org/
