California:

Tecate, CA:

Trinitarians of Mary, P.O. Box 1833, Tecate, CA 91980. [W] http://www.trinitariansofmary.org/Home_English.html

Baltimore, MD:

Trinitarians, PO Box 5719, Baltimore, MD 21282. [M] http://trinitarians.org/

Silver Spring, MD:

Missionary Servants of the Most Holy Trinity, 9001 New Hampshire Avenue, Suite 300, Silver Spring, MD 20903. [M] http://www.missionaryservantsvocations.org/ * http://www.mssst.org/en.html * http://www.trinitymissions.org/

Hopewell Junction, NY:

Oblates to the Blessed Trinity, St. Aloysius Novitiate, Box 98, Hopewell Junction, NY 12533. [W] http://st-aloysius.org/ * http://www.angelfire.com/ny3/aloysius/Vocation.htm

Euclid, OH:

Sisters of the Most Holy Trinity, 21281 Chardon Road, Euclid, OH 44117. [W] http://www.srstrinity.com/

Philadelphia, PA:

Missionary Servants of the Most Blessed Trinity, 3501 Solly Ave. Philadelphia, PA 19136. [W] http://www.msbt.org/

Society of Our Lady of the Most Holy Trinity (see: Our Lady)