In 1988/89, a pipe organ originally built by the Holtkamp firm in 1958 for Christ Church in Baltimore (opus 1720) was installed by David M. Storey. Four new stops in the Swell division and a new combination action were added. The instrument has 36 stops/39 ranks, the console has three manuals. See also National Register of Historic Places listings in the District of Columbia References External links St. Mark's Episcopal Church History St. Mark's Episcopal Church Web Site http://www.stmarks.net/ Churches completed in 1894 19th-century Episcopal church buildings Churches on the National Register of Historic Places in Washington, D.C. Episcopal churches in Washington, D.C. Gothic Revival church buildings in Washington, D.C. Religious organizations established in 1867 Romanesque Revival church buildings in Washington, D.C. 1867 establishments in Washington, D.C. Individually listed contributing properties to historic districts on the National Register in Washington, D.C. Capitol Hill