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Sources
Agency for Cultural Affairs and museums
- 文化遺産オンライン (Bunka Isan Online): katana 備前国住長船清光作 (Bizen no kuni-jū Osafune Kiyomitsu saku), 1550
- ColBase, Kyūshū National Museum: the Kiyomitsu katana (F104), with its photos and the text by Mochizuki Norifumi
- The Metropolitan Museum of Art: tachi signed Kiyomitsu, with its mounting (36.25.1694)
NBTHK: Sword Journal
- NBTHK Sword Journal no. 786 (July 2022): katana of Gorōzaemon-no-jō Kiyomitsu of 1555 and the forge at Tatsuno
- NBTHK Sword Journal no. 803 (December 2023): Gorōzaemon-no-jō and Magoemon-no-jō
- NBTHK Sword Journal no. 721 (February 2017): the two Kiyomitsu in kantei
- NBTHK Sword Journal no. 700 (May 2015): Katsumitsu, Kiyomitsu and Sukesada
- NBTHK Sword Journal no. 789 (October 2022): the Sue-Bizen kurikara
Studies
- Markus Sesko, “A brief outline of the changes in workmanship of the later Bizen tradition”
- Markus Sesko, “Some thoughts on Sue-Bizen horimono”
Encyclopaedias
- Kotobank: 末備前 (Sue-Bizen)
- Kotobank: 清光 (Kiyomitsu)
- Japanese Wikipedia: 長船派 (Osafune-ha)
- Japanese Wikipedia: 刀剣の業物一覧 (Tōken no wazamono ichiran)
Image credits
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The katana of 1550: the blade from both sides and the tang from both sides (katana-1550-hoja-a.jpg, katana-1550-hoja-b.jpg, katana-1550-nakago-a.jpg, katana-1550-nakago-b.jpg)
Kyūshū National Museum, via ColBase. Licence: ColBase terms of use, which allow free use with the source cited.