Much of Okada's extensive art collection is now housed in the MOA Museum of Art in Atami, Japan.
British Museum | Museum of Modern Art | Art Deco | Metropolitan Museum of Art | American Museum of Natural History | Art Institute of Chicago | Victoria and Albert Museum | Natural History Museum | San Francisco Museum of Modern Art | National Gallery of Art | Honolulu Museum of Art | museum | Whitney Museum of American Art | Museum of Fine Arts, Boston | Los Angeles County Museum of Art | Solomon R. Guggenheim Museum | National Air and Space Museum | Brooklyn Museum | National Baseball Hall of Fame and Museum | Art Nouveau | Royal College of Art | Walker Art Center | Hermitage Museum | National Museum of Racing and Hall of Fame | art | Glasgow School of Art | Museum of Contemporary Art | Field Museum of Natural History | Philadelphia Museum of Art | Imperial War Museum |