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Face Book Pictures of the floating world Pictures of the Floating World: Japanese Woodblock Prints
Face Book Kunichika: Master of Ukiyo-e https://www.facebook.com/groups/kunichika
Face Book Ukiyo-e (Picture of the floating world) https://www.facebook.com/groups/121576588004753
Face Book Ukiyo-e https://www.facebook.com/groups/15488913486
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A huge and multifaceted database related to ukiyo-e published by Yoshio Kato in Japanese.
浮世絵文献資料館 浮世絵文献資料館 (www.ne.jp)
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Research paper on Toyohara Kunichika by Sugawara Mayumi in Japanese.
菅原 真弓 (Mayumi Sugawara) – 豊原国周研究 : 大首絵の構図を中心に – 論文 – researchmap
豊原国周研究２ 国周の描く美人画作品について https://www.nua.ac.jp/research/files/pdf/fca2af4523c8796ca9cfbe6661e6aa26.pdf
豊原国周研究序説 https://researchmap.jp/sugawaram/published_papers/11798605
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Amy Newland “Shaping the present, ｃrafting the past: imaging self-narrative in the life and work of Toyohara Kunichika “ The University of Auckland 2016
https://researchspace.auckland.ac.nz/bitstream/handle/2292/28048/whole.pdf?sequence=2&isAllowed=y