by the United States National Park Service, Weekly List, National Register of Historic Places… (1984)
“ NORTHERN MARIANA ISLANDS, Rota Island, Songsong vicinity, Japanese Coastal Defense Gun, SE of Songsong (11/02/84) PENNSYLVANIA, Chester County, West Whiteland, Church Farm School (West Whiteland Township MRA) , US 30 (10/26784) Multiple Resource Areas are identified by MRA Thematic Resources are identified by TR NHL designates a National Historic Landmark This work is in the public domain in the United States because it is a work of the United States federal government (see 17 U.S.C. 105) . ”
