"Russian Fort". National Historic Landmark summary listing. National Park Service. Diarsipkan dari versi asli tanggal 2007-10-18. Diakses tanggal 2008-07-04.
web.archive.org
"Russian Fort". National Historic Landmark summary listing. National Park Service. Diarsipkan dari versi asli tanggal 2007-10-18. Diakses tanggal 2008-07-04.