found: Tsuchida Kyōson to sono jidai, 1991:colophon (Niigata-ken Sado-gun Niibo-mura)
found: Niigata-ken no chimei(Niibo-mura)
found: Nihon bunken chizu, 1989(Niibo-mura; in Niigata-ken)
found: Kokudo gyōsei kukaku, 1951(Niibo-mura)
found: GeoNames, algorithmically matched, 2009(civil; 38°00ʹ00ʺN 138°27ʹ00ʺE)
found: Nihon rekishi chimei taikei, Dec. 25, 2016(on Mar. 1, 2004, 相川町 = Aikawa-machi (r), 佐和田町 = Sawata-machi (r), 金井町 = Kanai-machi (r), 新穂村 = Niibo-mura (r), 畑野町 = Hatano-machi (r), 真野町 = Mano-machi (r), 小木町 = Ogi-machi (r), 羽茂町 = Hamochi-machi (r), 赤泊村 = Akadomari-mura (r), and 両津市 = Ryōtsu-shi (r) merged to form: 佐渡市 = Sado-shi (r))
found: Nihon daihyakka zensho, Dec. 25, 2016(through Mar. 1, 2004 merger of 両津市 = Ryōtsu-shi, 相川町 = Aikawa-machi, 佐和田町 = Sawata-machi, 金井町 = Kanai-machi, 新穂村 = Niibo-mura, 畑野町 = Hatano-machi, 真野町 = Mano-machi, 小木町 = Ogi-machi, 羽茂町 = Hamochi-machi, and 赤泊村 = Akadomari-mura to form 佐渡市 = Sado-shi, Sado Island became coextensive with Sado-shi)
