In 1898, at the invitation of the Archbishop of San Francisco, Patrick William Riordan, the Sulpicians founded what was, until 2017, their primary institution on the West Coast, Saint Patrick Seminary, Menlo Park, California. From the 1920s until about 1971, the Society operated St. Edward Seminary in Kenmore, Washington. The grounds now form Saint Edward State Park and Bastyr University. For a brief period in the 1990s, the Sulpicians were also involved in teaching at St. John's Seminary in Camarillo, the college seminary for the Archdiocese of Los Angeles.