"JR東日本E261系「サフィール踊り子」新型車両が試運転、都内を走行" [JR East E261 series "Saphir Odoriko" new vehicle trial run, traveling in metropolitan area]. news.mynavi.jp (in Japanese). Mynavi Corporation. November 21, 2019. Archived from the original on December 18, 2019. Retrieved December 18, 2019.
"【JR貨】 【JR東】 JR東日本E261系(日立製作所製作分)が甲種輸送される" [(JR freight) (JR East) JR East E261 series (built by Hitachi) delivered]. rail.hobidas.com (in Japanese). Neko Publishing. November 7, 2019. Archived from the original on December 18, 2019. Retrieved December 18, 2019.
"E261系6両が甲種輸送される" [Six E261 series cars delivered]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. November 6, 2019. Archived from the original on December 18, 2019. Retrieved December 18, 2019.
Osaka, Naoki (December 17, 2019). "全席グリーン以上、新「踊り子」はここがスゴい 青く輝く「サフィール」2020年春デビュー" [All seats above green, the new "Odoriko" is amazing - Blue shining "Saphir" debuts in spring 2020]. toyokeizai.net (in Japanese). Toyo Keizai Inc. Archived from the original on December 18, 2019. Retrieved December 18, 2019.
"JR東日本E261系「サフィール踊り子」新型車両が登場「サシE261」も" [JR East E261 series "Saphir Odoriko" new vehicle appeared "Sashi E261"]. news.mynavi.jp (in Japanese). Mynavi Corporation. November 7, 2019. Archived from the original on December 18, 2019. Retrieved December 18, 2019.
hobidas.com
rail.hobidas.com
"【JR貨】 【JR東】 JR東日本E261系(日立製作所製作分)が甲種輸送される" [(JR freight) (JR East) JR East E261 series (built by Hitachi) delivered]. rail.hobidas.com (in Japanese). Neko Publishing. November 7, 2019. Archived from the original on December 18, 2019. Retrieved December 18, 2019.
mynavi.jp
news.mynavi.jp
"JR東日本E261系「サフィール踊り子」新型車両が試運転、都内を走行" [JR East E261 series "Saphir Odoriko" new vehicle trial run, traveling in metropolitan area]. news.mynavi.jp (in Japanese). Mynavi Corporation. November 21, 2019. Archived from the original on December 18, 2019. Retrieved December 18, 2019.
"JR東日本E261系「サフィール踊り子」新型車両が登場「サシE261」も" [JR East E261 series "Saphir Odoriko" new vehicle appeared "Sashi E261"]. news.mynavi.jp (in Japanese). Mynavi Corporation. November 7, 2019. Archived from the original on December 18, 2019. Retrieved December 18, 2019.
railf.jp
"E261系6両が甲種輸送される" [Six E261 series cars delivered]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. November 6, 2019. Archived from the original on December 18, 2019. Retrieved December 18, 2019.
"特急"サフィール踊り子"が運転を開始" [Limited express "Saphir Odoriko" starts operation]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. March 15, 2020. Archived from the original on March 15, 2020. Retrieved March 15, 2020.
Osaka, Naoki (December 17, 2019). "全席グリーン以上、新「踊り子」はここがスゴい 青く輝く「サフィール」2020年春デビュー" [All seats above green, the new "Odoriko" is amazing - Blue shining "Saphir" debuts in spring 2020]. toyokeizai.net (in Japanese). Toyo Keizai Inc. Archived from the original on December 18, 2019. Retrieved December 18, 2019.
web.archive.org
"特急"サフィール踊り子"が運転を開始" [Limited express "Saphir Odoriko" starts operation]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. March 15, 2020. Archived from the original on March 15, 2020. Retrieved March 15, 2020.