1940      Born as twins in Osaka. 
　　　　　　(His twin brother, YukihikoTashima, is a dyer and picturebook author.) 
　　　　　　Spent his childhood in Kouchi Prefecture.

1960      Won the Golden Award and the Special Award at the National Exhibition of Sightseeing

 Posters.

1962       Graduated from the design department at Tama Art College. Published a hand-printed

picture book "Shibaten" during his college years.

1965      The first private exhibition of his art work at Nantenshi Gallery.  Published his first picture

              book, "Furuyanomori."
1969      Won the Golden Apple Award at the second Biennale of Illustrations Bratislava, BIB.
　　　　　　Moved to Hinode Village (now Hinode Town) in Tokyo.

1971       "Shibaten" was published by a publisher.

1974      Won the fifth Kodansha Publication Culture Award with "Fukimanbuku."  Submitted to the

first "Hitohito Exhibition: the Black Sun Seven Artists" as an establishing member of the

Hitohito Society, from which he withdrew in 1992.

1975      Published “Yaginoshizuka” or “Shizuka the Goat,” which gained public favor, but went out

of print.  (Later published from Kaiseisha after largely redrawn.) Started struggling to

destroy his previous style and create a new style.

1980      Broke a new ground with his new style in “Hora, Ishikorogaokkochitayo. Ne, Wasureyouyo”

or “Hey, a Pebble Fell. Well, Let’s Forget.”

1989      Won the Nippon Picture Book Award with “Tobebatta” or “Leap, Grasshopper.”

1990      Won the Shogakkan Picture Award and Illustrator’s Yearbook Award with “Tobebatta.”

Started fighting against the construction of a large waste repository in Hinode Town, and

joined the movement for protecting Hinode Forest from destruction and chemical pollution,

and conducting its environmental conservation activities. (The fight is still going on.)

1992      Published his autobiographical essay, “Enonakanobokunomura” or “My Village in the

Picture,” which was made into a movie directed by Youichi Higashi in 1996 and won a

Silver Bear at Berlin International Film Festival.
http://en.wikipedia.org/wiki/Berlin_Film_Festival

1998      Developed a cancer caused by chemicals from the waste repository and moved to Izu

Peninsula.  Started creating art works using natural materials from the Hinode Forest.

2003     Published a collection of his art works made with nuts, “Kimihananiosgaiteru?” or “What are

you looking for?” from Arton Co. Ltd. Opened “All of Taｓｈima Seizo Exhibition” at Ikeda

20th Century Memorial Museum.

2004      Private exhibition at Matsudai Noubutai Gallery, “Seimeinokioku Kinomi Taｓｈima

Seizo- ten” (“The exhibition of Seizo Taｓｈima, Memory of Life: Nuts”), using nuts as

the only material. Published “Gao” and “Mokurenojisan,” picture books of his works with nuts.

2005      Three-man exhibition with Koichi Tanikawa and Chizuru Miyasako at Nerima Art Museum

in Tokyo. 

2006      Two-man exhibition with his twin brother, Yukihiko, at the Museum of Art, Kochi, and

also at Niitsu Art Forum in Niigata in 2007.

2008      Exhibition of the original drawings of his picture books at the Hiratsuka Museum of Art,

and “Tashima Seizo Ehontokinomi-ten” (“The Exhibition of Seizo Taｓｈima: Picture Books

and Nuts”) at Sanada Elementary School at Tokamachi City, Niigata.

2009      Submitted his works to the fourth Tumari Triennale
　　　　　　Echigo Tsumari Art Triennale (abandoned shool was wholly renovated to a museum named
　　　　　　”Ehon to Kinomi no Bijyutsukan (Museum of Picture Books and Nuts)"
2011　　 Solo exhibition at Fukuyma Museum
2013　　Setouchi Triennale, projects of "Aozora Aquarium" and "Path in thr Forest"
2018　　Won the ADC Award for ITOCHU newspaper advertisement
2019　　Won the IWAYA Sazanabi Literar Award
2021　　Won the Sankei Children's Cultural Award for a children's book, "Tsukamaeta (Got You)"