Walter Gramatté died on 9 February 1929 of Intestinal Tuberculosis.
His second wife Sonia married again, was then named Sophie Carmen Eckhardt-Gramatté and lived in Canada as a renowned musician. To remember her and her former husband Walter Gramatté „The Eckhardt-Gramatté-Foundation" was established in Winnipeg, Canada.
Walter Gramatté's written posthumous works are preserved in the German National Museum.
A special exhibition of his paintings, titled Rediscovered: Walter Gramatté 1897-1929, took place in Hamburg Ernst Barlach Haus from 26 October 2008 to 1 February 2009. This exhibition was organized by Kirchner Museum in Davos, Switzerland and the Ernst Barlach Haus in Hamburg, Germany.
- The Patient with the Flowers (1918)
- The Rebel. Café Scene with Stick (1918)
- Robert at the Theatre (1918)
- Even under Trees (1921)
- Tired Flower Girl I (Private collection)
- Even with Broken Eyes (1922)
Gramatté's work is displayed in the Germanisches Nationalmuseum (German National Museum).
- Claus Pese: Mehr als nur Kunst. Das Archiv für Bildende Kunst im Germanischen Nationalmuseum, Ostfildern-Ruit 1998 (Kulturgeschichtliche Spaziergänge im Germanischen Nationalmuseum, Bd.2), S.74-77.
- Personal data and oil paintings by The Eckhardt-Gramatté-Foundation, Winnipeg, Canada
- Works by Walter Gramatté at Zeno.org
- Walter Gramatté in the German National Library catalogue
- Paintings by Gramatté in the German Galerie Remmert und Barth
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