Unknown sp.; Echinarachnius brevis Ikeda 1898

Unknown sp.; Pericosmus cordatus Mortensen 1950

Natural History Museum of Denmark

Europeana API

Unknown sp.; Astroceras pergamenum Mortensen 1933

Natural History Museum of Denmark

Europeana API

Unknown sp.; Goniocidaris alba Mortensen 1928

Natural History Museum of Denmark

Europeana API

Unknown sp.; Chaetodiscus scutella Lütken 1864

Natural History Museum of Denmark

Europeana API

Unknown sp.; Lamprechinus sculptus Mortensen 1942

Natural History Museum of Denmark

Europeana API

Unknown sp.; Cyllometra anomala Clark 1908

Natural History Museum of Denmark

Europeana API

Unknown sp.; Echinarachnius griseus Mortensen 1927

Natural History Museum of Denmark

Europeana API

Unknown sp.; Peronella japonica Mortensen 1948

Natural History Museum of Denmark

Europeana API

IKEDA, Hayato

NDL Digital Collections

NDL Digital Collections

IKEDA, Kiyoshi

NDL Digital Collections

NDL Digital Collections

Scaphechinus tenuis (Yoshiwara) 1898; Echinarachnis tenuis Yoshiwara 1898

Natural History Museum of Denmark

Europeana API

（台湾1898）

Torii Ryuzo Memorial Museum

ADEAC: A System of Digitalization and Exhibition for Archive Collections

(台湾 1898)

Torii Ryuzo Memorial Museum

ADEAC: A System of Digitalization and Exhibition for Archive Collections

Unknown

Philadelphia Museum of Art

Philadelphia Museum of Art collection

Unknown

Philadelphia Museum of Art

Philadelphia Museum of Art collection

Unknown

Philadelphia Museum of Art

Philadelphia Museum of Art collection

Unknown

Philadelphia Museum of Art

Philadelphia Museum of Art collection

TAISEI KAI: IKEDA, Seihin

NDL Digital Collections

NDL Digital Collections

Mitsukurina owstoni Jordan, 1898

Natural History Museum, London

Europeana API

(台湾 1898-1899)

Torii Ryuzo Memorial Museum

ADEAC: A System of Digitalization and Exhibition for Archive Collections

Mitsukurina owstoni Jordan, 1898

Natural History Museum, London

Europeana API

Porträt Ministerpräsident Japan Hayate Ikeda

Archival of the Sozial Democracy (AdsD)

Europeana API

Title Unknown

Harvard Art Museums

Harvard Art Museums API

Title Unknown

Art Institute of Chicago

Art Institute of Chicago API

disc

British Museum

British Museum Collection

Scaphechinus tenuis (Yoshiwara) 1898; Echinarachnis tenuis Yoshiwara 1898

Natural History Museum of Denmark

Europeana API

白磁花形皿

Kyushu National Museum

Integrated Collections Database of the National Museums, Japan

白磁　柿形水滴

Aichi Prefectural Museum of Art

The collection of Aichi Prefectural Museum of Art

石錘

Tokyo National Museum

Integrated Collections Database of the National Museums, Japan

Unknown sp.; Peronella japonica Mortensen 1948

Natural History Museum of Denmark

Europeana API

Hollow object

Kyushu National Museum

Integrated Collections Database of the National Museums, Japan

Sherd: Fragment of the Base of a Mukozuke Dish

Harvard Art Museums

Harvard Art Museums API

Unknown sp.; Chaetodiscus scutella Lütken 1864

Natural History Museum of Denmark

Europeana API

Unknown sp.; Echinarachnius griseus Mortensen 1927

Natural History Museum of Denmark

Europeana API

Sherd: Fragment of a Plate

Harvard Art Museums

Harvard Art Museums API

Stone with Sutra Text

Tokyo National Museum

Integrated Collections Database of the National Museums, Japan

Fragment of Round Eaves Tile with Simple Lotus Petal Design Excavated from Motoyakushi-ji Temple

Kyoto National Museum

Integrated Collections Database of the National Museums, Japan

埴輪残片

Tokyo National Museum

Integrated Collections Database of the National Museums, Japan

Raisen Kaigan 35

Museum of Modern Art, New York

The Museum of Modern Art (MoMA) Collection