「元吉要之助」「大和田蔵之進」

「元吉要之助」「大和田蔵之進」

Museum of Fine Arts, Boston

ARC Ukiyo-e Portal Database

「元吉要之助」

The Tsubouchi Memorial Theatre Museum, Waseda University

The database of ukiyo-e

「元吉要之助」

National Museum of Japanese History

ARC Ukiyo-e Portal Database

「大和田蔵之進」「元吉要之助」「山荘太夫」「女房おらち」「山岡権六」

Tokyo Metropolitan Central Library

ARC Ukiyo-e Portal Database

「元吉要之助」「対王丸」

The Tsubouchi Memorial Theatre Museum, Waseda University

The database of ukiyo-e

「対王丸」「元吉要之助」

Maizuru City Itoi Collection

ARC Ukiyo-e Portal Database

「大江郡領時廉」「元吉要之助」

Maizuru City Itoi Collection

ARC Ukiyo-e Portal Database

元吉要之助　太夫娘おさん

National Museum of Japanese History

IIIF Discovery in Japan

[村田了阿　吉之助〔村田吉之助〕 宛書簡]

Tokyo Metropolitan Central Library

Tokyo Metropolitan Library Edo-Tokyo Digital Collections

「元吉要之助」「三庄太夫娘おさん」

Maizuru City Itoi Collection

ARC Ukiyo-e Portal Database

「三荘太夫」「娘おさん」「元吉要之助」

Maizuru City Itoi Collection

ARC Ukiyo-e Portal Database

「元吉要之助」「三庄太夫娘おさん」

The Tsubouchi Memorial Theatre Museum, Waseda University

The database of ukiyo-e

「元吉要之助」「三庄太夫娘おさん」

Nationaal Museum van Wereldculturen (Rijksmuseum Volkenkunde, Leiden)

ARC Ukiyo-e Portal Database

（吉田順之助書簡）

Digital Archive Fukui

Digital Archive Fukui

岡田要之助･封書

Minakata Kumagusu Archives

Minakata Kumagusu Residence: Library, Herbarium, Documents

岡田要之助･封書

Minakata Kumagusu Archives

Minakata Kumagusu Residence: Library, Herbarium, Documents

岡田要之助･封書

Minakata Kumagusu Archives

Minakata Kumagusu Residence: Library, Herbarium, Documents

岡田要之助･封書

Minakata Kumagusu Archives

Minakata Kumagusu Residence: Library, Herbarium, Documents

岡田要之助･封書

Minakata Kumagusu Archives

Minakata Kumagusu Residence: Library, Herbarium, Documents

岡田要之助･葉書

Minakata Kumagusu Archives

Minakata Kumagusu Residence: Library, Herbarium, Documents

岡田要之助･封書

Minakata Kumagusu Archives

Minakata Kumagusu Residence: Library, Herbarium, Documents

岡田要之助･封書

Minakata Kumagusu Archives

Minakata Kumagusu Residence: Library, Herbarium, Documents

「吉三郎　沢村田之助」

British Museum

ARC Ukiyo-e Portal Database

（上田元吉）

National Institute of Japanese Literature

Collectors'Seals Database