GNU Hurd
In 2009, the church acquired, with help from the Ahmanson Foundation, a very high quality pipe organ built in 1929 by Ernest M. Skinner (Opus 774). The church also runs a preschool and pre-Kindergarten program for children between the ages of two and five. In 2013, a book was published which details the history of the parish. Thomas Bushnell, BSG, notable founder of the GNU Hurd, is a member of St. Mark's.