1. ALL HALLOWS GUILD. 2018. Fountains, Statuary, Plaques. Retrieved from https://allhallowsguild.org/the-grounds/fountains-statuaryplaques/ on Oct. 10, 2018.
2. BRATENAHL, F. 1929. A Cathedral Hillside and its Gardens. Washington, DC : All Hallows Guild, 1929.
3. CLARK, K. 1973. The Gothic Revival: an essay in the history of taste. London : Murray, 1973.
4. DEETZ, J. 1977. In small things forgotten: The Archaeology of Early American Life. New York : Doubleday, 1977.
5. HEAVERS, N. 2018. The Olmsted Woods: A hybrid approach to creating sacred groves at the Washington National Cathedral. In European Council of Landscape Architecture Schools Conference Proceedings, Belgium : University College Ghent, 2018, pp. 310–316.