Ştefan Constantinescu, (born 10 February 1968), is a Swedish-Romanian visual artist and film director living and working in Stockholm.
 He works with various mediums including film, artist books and paintings approaching the political through introspection to challenge notions of identity, while working in and with issues of post-communist Romania.
 Constantinescu grew up in Romania during the most austere years of communism, where an ordinary day began with a queue for almost anything (bread, shampoo, gas) - days of routine.
 As a result his work is often strongly autobiographical.
 Within the work, monuments are challenged as permanent inscriptions of memory, fictional films resemble unofficial documentaries, and artist books challenge history and education.
 Known for his "powerful study of everyday terror" in his short film "Troleibuzul 92" that was shown in the Venice Biennale 2009
Renee Richetts (November 5, 1954) is an American artist best known for her hinged metal books, created from re-purposed materials.
 Her genre of work is mixed-media sculpture in the category of artist books.
 Examples of her work are represented in public collections at the University of California in San Diego, the Girl Scout Museum in New York, and at the San Diego Discovery Children’s Museum in Escondido, California.
 Her work is widely collected in the U.S., Europe, and Japan.
Paul Klee (] ; 18 December 1879 – 29 June 1940) was a Swiss-German artist.
 His highly individual style was influenced by movements in art that included Expressionism, Cubism, and Surrealism.
 Klee was a natural draftsman who experimented with and eventually deeply explored color theory, writing about it extensively; his lectures "Writings on Form and Design Theory" ("Schriften zur Form und Gestaltungslehre"), published in English as the "Paul Klee Notebooks", are held to be as important for modern art as Leonardo da Vinci's "A Treatise on Painting" for the Renaissance.
 He and his colleague, Russian painter Wassily Kandinsky, both taught at the Bauhaus school of art, design and architecture.
 His works reflect his dry humor and his sometimes childlike perspective, his personal moods and beliefs, and his musicality.
Maty Grunberg (Hebrew מתי גרינברג) born 1943, is an Israeli sculptor and known also for his Artist Books.
Catherine Taft is an art critic, curator, and writer.
 Taft has been published in "Artforum", "Modern Painters", "ArtReview", "Metropolis-M", "Kaleidoscope Publishing", and multiple exhibition catalogs and artist books.
 She has writing in "Part-Objects", an artist book for Scott Benzel that was published by Human Resources and Lockitch Press.
Roberta Allen is a short story writer, novelist, memoirist, conceptual artist, sculptor, photographer, and creative writing instructor.
 Language has been the inspiration for both her writing and her art.
 In her conceptual works - which include drawings, collages, artist books, photo/text works, installations and digital prints - she explores how text informs or changes our perception of images, often with more than a hint of humor and a philosophical bent.
 With dark humor, her books present characters at odds with themselves and others, sometimes in exotic locales.
Kaka Hathrasi (18 September 1906 – 18 September 1995) was a noted Hindi satirist and humorist poet of India.
 His real name was Prabhu Lal Garg.
 He wrote under the pen name "Kaka Hathrasi".
 He chose "Kaka", as he played the character in a play which made him popular, and "Hathrasi" after the name of his hometown Hathras.
 He has 42 works to his credit, comprising a collection of humorous and satirical poems, prose and plays published by various publishers.
 He also wrote three books on Indian classical music under the pen name "Vasant".
 In 1932, he established "Sangeet Karyalaya" (initially Garg and Co.), a noted publishing house for the books on Indian classical music and dance and started publishing a monthly magazine "Sangeet" in 1935, which earned a high reputation.
 "Sangeet" is the only periodical on Indian classical music and dance which has been continuously published for over 78 years.
 Kaka Hathrasi had many talents – as a writer, poet, musician, musicologist, actor and a fine painter.
 .
 He was a regular performer of Hindi Kavi Sammelan.
 In fact, he was one of the poets who established Hasya (comic) Kavi on Kavi Sammelan stage.
Carol Barton (born 3 June 1954) is a book artist, paper engineer, curator, and educator.
 She is the proprietor of Popular Kinetics Press and has published several editions of artist books.
 She may be best known for her series of interactive workbooks, "The Pocket Paper Engineer".
Jean-Max Albert is a painter, sculptor, writer, and musician.
 He has published theory, artist's books, a collection of poems, plays and novels inspired by quantic physics.
 He perpetuated a reflexion initiated by Paul Klee and Edgar Varèse on the transposition of musical structures into formal constructions.
 He created plant architectures which come close to site-specific art, environmental sculpture and generative art.
2dcloud is a publisher of comic books, graphic novels and artist books based in Chicago.
 The books it publishes are distributed by Consortium Book Sales & Distribution.
 They are noted for their artistic content, as well as the quality of printing and design.
 Many notable cartoonists have published their work through 2dcloud, including Gina Wynbrandt, Julie Doucet, Leif Goldberg, Juliacks, Simon Hanselmann, and Noah Van Sciver.
 "Mirror Mirror" is 2dcloud's flagship anthology.

Question: What was the nationality of the painter, sculptor, writer and musician that was known for publishing theories and artist books as well as a collection of poems?
Answer: Swiss-German